diff --git a/config/config.exs b/config/config.exs
index 37f6a25d..d833be2f 100644
--- a/config/config.exs
+++ b/config/config.exs
@@ -18,6 +18,7 @@ config :mobilizon, :instance,
   hostname: "localhost",
   registrations_open: false,
   registration_email_allowlist: [],
+  languages: [],
   demo: false,
   repository: Mix.Project.config()[:source_url],
   allow_relay: true,
diff --git a/js/src/graphql/admin.ts b/js/src/graphql/admin.ts
index 742a2939..b135a001 100644
--- a/js/src/graphql/admin.ts
+++ b/js/src/graphql/admin.ts
@@ -104,6 +104,15 @@ export const REJECT_RELAY = gql`
   ${RELAY_FRAGMENT}
 `;
 
+export const LANGUAGES = gql`
+  query {
+    languages {
+      code
+      name
+    }
+  }
+`;
+
 export const ADMIN_SETTINGS_FRAGMENT = gql`
   fragment adminSettingsFragment on AdminSettings {
     instanceName
@@ -118,6 +127,7 @@ export const ADMIN_SETTINGS_FRAGMENT = gql`
     instancePrivacyPolicyUrl
     instanceRules
     registrationsOpen
+    instanceLanguages
   }
 `;
 
@@ -144,6 +154,7 @@ export const SAVE_ADMIN_SETTINGS = gql`
     $instancePrivacyPolicyUrl: String
     $instanceRules: String
     $registrationsOpen: Boolean
+    $instanceLanguages: [String]
   ) {
     saveAdminSettings(
       instanceName: $instanceName
@@ -158,6 +169,7 @@ export const SAVE_ADMIN_SETTINGS = gql`
       instancePrivacyPolicyUrl: $instancePrivacyPolicyUrl
       instanceRules: $instanceRules
       registrationsOpen: $registrationsOpen
+      instanceLanguages: $instanceLanguages
     ) {
       ...adminSettingsFragment
     }
diff --git a/js/src/i18n/en_US.json b/js/src/i18n/en_US.json
index 683513bf..84554377 100644
--- a/js/src/i18n/en_US.json
+++ b/js/src/i18n/en_US.json
@@ -789,5 +789,9 @@
   "Congratulations, your account is now created!": "Congratulations, your account is now created!",
   "Now, create your first profile:": "Now, create your first profile:",
   "If you have opted for manual validation of participants, Mobilizon will send you an email to inform you of new participations to be processed. You can choose the frequency of these notifications below.": "If you have opted for manual validation of participants, Mobilizon will send you an email to inform you of new participations to be processed. You can choose the frequency of these notifications below.",
-  "You will be able to add an avatar and set other options in your account settings.": "You will be able to add an avatar and set other options in your account settings."
+  "You will be able to add an avatar and set other options in your account settings.": "You will be able to add an avatar and set other options in your account settings.",
+  "Instance languages": "Instance languages",
+  "Main languages you/your moderators speak": "Main languages you/your moderators speak",
+  "Select languages": "Select languages",
+  "No languages found": "No languages found"
 }
diff --git a/js/src/i18n/fr_FR.json b/js/src/i18n/fr_FR.json
index 882e5db3..2b79d4db 100644
--- a/js/src/i18n/fr_FR.json
+++ b/js/src/i18n/fr_FR.json
@@ -388,7 +388,7 @@
   "My events": "Mes évènements",
   "My groups": "Mes groupes",
   "My identities": "Mes identités",
-  "NOTE! The default terms have not been checked over by a lawyer and thus are unlikely to provide full legal protection for all situations for an instance admin using them. They are also not specific to all countries and jurisdictions. If you are unsure, please check with a lawyer.": "REMARQUE : les conditions par défaut n'ont pas été vérifiées par un juriste et ne sont donc susceptibles de ne pas offrir une protection juridique complète dans toutes les situations pour un·e administrateur·ice d'instance qui les utilise. Elles ne sont pas non plus spécifiques à tous les pays et juridictions. Si vous n'êtes pas sûr, veuillez consulter un juriste.",
+  "NOTE! The default terms have not been checked over by a lawyer and thus are unlikely to provide full legal protection for all situations for an instance admin using them. They are also not specific to all countries and jurisdictions. If you are unsure, please check with a lawyer.": "REMARQUE : les conditions par défaut n'ont pas été vérifiées par un·e juriste et ne sont donc susceptibles de ne pas offrir une protection juridique complète dans toutes les situations pour un·e administrateur·ice d'instance qui les utilise. Elles ne sont pas non plus spécifiques à tous les pays et juridictions. Si vous n'êtes pas sûr, veuillez consulter un·e juriste.",
   "Name": "Nom",
   "New discussion": "Nouvelle discussion",
   "New email": "Nouvelle adresse e-mail",
@@ -831,5 +831,9 @@
   "Congratulations, your account is now created!": "Bravo, votre compte est dorénavant créé !",
   "Now, create your first profile:": "Maintenant, créez votre premier profil :",
   "If you have opted for manual validation of participants, Mobilizon will send you an email to inform you of new participations to be processed. You can choose the frequency of these notifications below.": "Si vous avez opté pour la validation manuelle des participantes, Mobilizon vous enverra un email pour vous informer des nouvelles participations à traiter. Vous pouvez choisir la fréquence de ces notifications ci-dessous.",
-  "You will be able to add an avatar and set other options in your account settings.": "Vous pourrez ajouter un avatar et définir d'autres options dans les paramètres de votre compte."
+  "You will be able to add an avatar and set other options in your account settings.": "Vous pourrez ajouter un avatar et définir d'autres options dans les paramètres de votre compte.",
+  "Instance languages": "Langues de l'instance",
+  "Main languages you/your moderators speak": "Principales langues parlées par vous / vos modérateurs",
+  "Select languages": "Choisissez une langue",
+  "No languages found": "Aucune langue trouvée"
 }
diff --git a/js/src/types/admin.model.ts b/js/src/types/admin.model.ts
index 6791ec12..cf50a4f3 100644
--- a/js/src/types/admin.model.ts
+++ b/js/src/types/admin.model.ts
@@ -20,6 +20,11 @@ export enum InstancePrivacyType {
   CUSTOM = "CUSTOM",
 }
 
+export interface ILanguage {
+  code: string;
+  name: string;
+}
+
 export interface IAdminSettings {
   instanceName: string;
   instanceDescription: string;
@@ -33,4 +38,5 @@ export interface IAdminSettings {
   instancePrivacyPolicyUrl: string | null;
   instanceRules: string;
   registrationsOpen: boolean;
+  instanceLanguages: string[];
 }
diff --git a/js/src/views/Admin/Settings.vue b/js/src/views/Admin/Settings.vue
index 923782bb..214faa8c 100644
--- a/js/src/views/Admin/Settings.vue
+++ b/js/src/views/Admin/Settings.vue
@@ -43,6 +43,24 @@
             <p class="content" v-else>{{ $t("Registration is closed.") }}</p>
           </b-switch>
         </b-field>
+        <div class="field">
+          <label class="label has-help">{{ $t("Instance languages") }}</label>
+          <small>
+            {{ $t("Main languages you/your moderators speak") }}
+          </small>
+          <b-taginput
+            v-model="adminSettings.instanceLanguages"
+            :data="filteredLanguages"
+            autocomplete
+            :open-on-focus="true"
+            field="name"
+            icon="label"
+            :placeholder="$t('Select languages')"
+            @typing="getFilteredLanguages"
+          >
+            <template slot="empty">{{ $t("No languages found") }}</template>
+          </b-taginput>
+        </div>
         <div class="field">
           <label class="label has-help">{{ $t("Instance Long Description") }}</label>
           <small>
@@ -256,32 +274,55 @@
   </div>
 </template>
 <script lang="ts">
-import { Component, Vue } from "vue-property-decorator";
-import { ADMIN_SETTINGS, SAVE_ADMIN_SETTINGS } from "@/graphql/admin";
-import { IAdminSettings, InstanceTermsType, InstancePrivacyType } from "../../types/admin.model";
+import { Component, Vue, Watch } from "vue-property-decorator";
+import { ADMIN_SETTINGS, SAVE_ADMIN_SETTINGS, LANGUAGES } from "@/graphql/admin";
+import {
+  IAdminSettings,
+  InstanceTermsType,
+  InstancePrivacyType,
+  ILanguage,
+} from "../../types/admin.model";
 import RouteName from "../../router/name";
 
 @Component({
   apollo: {
     adminSettings: ADMIN_SETTINGS,
+    languages: LANGUAGES,
   },
 })
 export default class Settings extends Vue {
   adminSettings!: IAdminSettings;
 
+  languages!: ILanguage[];
+
+  filteredLanguages: string[] = [];
+
   InstanceTermsType = InstanceTermsType;
 
   InstancePrivacyType = InstancePrivacyType;
 
   RouteName = RouteName;
 
-  async updateSettings() {
+  @Watch("languages")
+  setCorrectLanguagesNames(): void {
+    if (this.languages && this.adminSettings) {
+      this.adminSettings.instanceLanguages = this.adminSettings.instanceLanguages
+        .map((code) => this.languageForCode(code))
+        .filter((language) => language) as string[];
+    }
+  }
+
+  async updateSettings(): Promise<void> {
+    const variables = { ...this.adminSettings };
+    // eslint-disable-next-line @typescript-eslint/ban-ts-comment
+    // @ts-ignore
+    variables.instanceLanguages = variables.instanceLanguages.map((language) => {
+      return this.codeForLanguage(language);
+    });
     try {
       await this.$apollo.mutate({
         mutation: SAVE_ADMIN_SETTINGS,
-        variables: {
-          ...this.adminSettings,
-        },
+        variables,
       });
       this.$notifier.success(this.$t("Admin settings successfully saved.") as string);
     } catch (e) {
@@ -289,6 +330,32 @@ export default class Settings extends Vue {
       this.$notifier.error(this.$t("Failed to save admin settings") as string);
     }
   }
+
+  getFilteredLanguages(text: string): void {
+    this.filteredLanguages = this.languages
+      ? this.languages
+          .filter((language: ILanguage) => {
+            return language.name.toString().toLowerCase().indexOf(text.toLowerCase()) >= 0;
+          })
+          .map(({ name }) => name)
+      : [];
+  }
+
+  codeForLanguage(language: string): string | undefined {
+    if (this.languages) {
+      const lang = this.languages.find(({ name }) => name === language);
+      if (lang) return lang.code;
+    }
+    return undefined;
+  }
+
+  languageForCode(codeGiven: string): string | undefined {
+    if (this.languages) {
+      const lang = this.languages.find(({ code }) => code === codeGiven);
+      if (lang) return lang.name;
+    }
+    return undefined;
+  }
 }
 </script>
 <style lang="scss" scoped>
diff --git a/lib/graphql/resolvers/admin.ex b/lib/graphql/resolvers/admin.ex
index 617620c7..3cb9024a 100644
--- a/lib/graphql/resolvers/admin.ex
+++ b/lib/graphql/resolvers/admin.ex
@@ -8,6 +8,7 @@ defmodule Mobilizon.GraphQL.Resolvers.Admin do
   alias Mobilizon.{Actors, Admin, Config, Events}
   alias Mobilizon.Actors.Actor
   alias Mobilizon.Admin.{ActionLog, Setting}
+  alias Mobilizon.Cldr.Language
   alias Mobilizon.Config
   alias Mobilizon.Discussions.Comment
   alias Mobilizon.Events.Event
@@ -156,6 +157,19 @@ defmodule Mobilizon.GraphQL.Resolvers.Admin do
     end
   end
 
+  def get_list_of_languages(_parent, _args, _resolution) do
+    locale = Gettext.get_locale()
+
+    case Language.known_languages(locale) do
+      data when is_map(data) ->
+        data = Enum.map(data, fn {code, elem} -> %{code: code, name: elem.standard} end)
+        {:ok, data}
+
+      {:error, err} ->
+        {:error, err}
+    end
+  end
+
   def get_dashboard(_parent, _args, %{context: %{current_user: %User{role: role}}})
       when is_admin(role) do
     last_public_event_published =
@@ -202,11 +216,7 @@ defmodule Mobilizon.GraphQL.Resolvers.Admin do
          res <-
            res
            |> Enum.map(fn {key, %Setting{value: value}} ->
-             case value do
-               "true" -> {key, true}
-               "false" -> {key, false}
-               value -> {key, value}
-             end
+             {key, Admin.get_setting_value(value)}
            end)
            |> Enum.into(%{}),
          :ok <- eventually_update_instance_actor(res) do
diff --git a/lib/graphql/resolvers/config.ex b/lib/graphql/resolvers/config.ex
index 8639c690..a0d3626a 100644
--- a/lib/graphql/resolvers/config.ex
+++ b/lib/graphql/resolvers/config.ex
@@ -75,6 +75,7 @@ defmodule Mobilizon.GraphQL.Resolvers.Config do
       demo_mode: Config.instance_demo_mode?(),
       description: Config.instance_description(),
       long_description: Config.instance_long_description(),
+      languages: Config.instance_languages(),
       anonymous: %{
         participation: %{
           allowed: Config.anonymous_participation?(),
diff --git a/lib/graphql/schema/admin.ex b/lib/graphql/schema/admin.ex
index c9f1695a..a5b58cd0 100644
--- a/lib/graphql/schema/admin.ex
+++ b/lib/graphql/schema/admin.ex
@@ -64,6 +64,11 @@ defmodule Mobilizon.GraphQL.Schema.AdminType do
     end)
   end
 
+  object :language do
+    field(:code, :string, description: "The iso-639-3 language code")
+    field(:name, :string, description: "The language name")
+  end
+
   object :dashboard do
     field(:last_public_event_published, :event, description: "Last public event publish")
     field(:number_of_users, :integer, description: "The number of local users")
@@ -85,6 +90,7 @@ defmodule Mobilizon.GraphQL.Schema.AdminType do
     field(:instance_privacy_policy_url, :string)
     field(:instance_rules, :string)
     field(:registrations_open, :boolean)
+    field(:instance_languages, list_of(:string))
   end
 
   enum :instance_terms_type do
@@ -107,6 +113,10 @@ defmodule Mobilizon.GraphQL.Schema.AdminType do
       resolve(&Admin.list_action_logs/3)
     end
 
+    field :languages, type: list_of(:language) do
+      resolve(&Admin.get_list_of_languages/3)
+    end
+
     field :dashboard, type: :dashboard do
       resolve(&Admin.get_dashboard/3)
     end
@@ -172,6 +182,7 @@ defmodule Mobilizon.GraphQL.Schema.AdminType do
       arg(:instance_privacy_policy_url, :string)
       arg(:instance_rules, :string)
       arg(:registrations_open, :boolean)
+      arg(:instance_languages, list_of(:string))
 
       resolve(&Admin.save_settings/3)
     end
diff --git a/lib/graphql/schema/config.ex b/lib/graphql/schema/config.ex
index 7bd12883..7557fdbb 100644
--- a/lib/graphql/schema/config.ex
+++ b/lib/graphql/schema/config.ex
@@ -14,6 +14,7 @@ defmodule Mobilizon.GraphQL.Schema.ConfigType do
     field(:long_description, :string)
     field(:contact, :string)
 
+    field(:languages, list_of(:string))
     field(:registrations_open, :boolean)
     field(:registrations_allowlist, :boolean)
     field(:demo_mode, :boolean)
diff --git a/lib/mobilizon/admin/admin.ex b/lib/mobilizon/admin/admin.ex
index 07f1854e..a07f2b1f 100644
--- a/lib/mobilizon/admin/admin.ex
+++ b/lib/mobilizon/admin/admin.ex
@@ -80,10 +80,31 @@ defmodule Mobilizon.Admin do
   def get_admin_setting_value(group, name, fallback \\ nil)
       when is_bitstring(group) and is_bitstring(name) do
     case Repo.get_by(Setting, group: group, name: name) do
-      nil -> fallback
-      %Setting{value: ""} -> fallback
-      %Setting{value: nil} -> fallback
-      %Setting{value: value} -> value
+      nil ->
+        fallback
+
+      %Setting{value: ""} ->
+        fallback
+
+      %Setting{value: nil} ->
+        fallback
+
+      %Setting{value: value} ->
+        get_setting_value(value)
+    end
+  end
+
+  def get_setting_value(value) do
+    case Jason.decode(value) do
+      {:ok, val} ->
+        val
+
+      {:error, _} ->
+        case value do
+          "true" -> true
+          "false" -> false
+          value -> value
+        end
     end
   end
 
@@ -116,7 +137,7 @@ defmodule Mobilizon.Admin do
         Setting.changeset(%Setting{}, %{
           group: group,
           name: Atom.to_string(key),
-          value: to_string(val)
+          value: convert_to_string(val)
         }),
         on_conflict: :replace_all,
         conflict_target: [:group, :name]
@@ -124,4 +145,11 @@ defmodule Mobilizon.Admin do
 
     do_save_setting(transaction, group, rest)
   end
+
+  defp convert_to_string(val) do
+    case val do
+      val when is_list(val) -> Jason.encode!(val)
+      val -> to_string(val)
+    end
+  end
 end
diff --git a/lib/mobilizon/cldr.ex b/lib/mobilizon/cldr.ex
index f8da0f17..fa2ead59 100644
--- a/lib/mobilizon/cldr.ex
+++ b/lib/mobilizon/cldr.ex
@@ -5,5 +5,5 @@ defmodule Mobilizon.Cldr do
 
   use Cldr,
     locales: ["cs", "de", "en", "es", "fr", "it", "ja", "nl", "pl", "pt", "ru"],
-    providers: [Cldr.Number, Cldr.Calendar, Cldr.DateTime]
+    providers: [Cldr.Number, Cldr.Calendar, Cldr.DateTime, Cldr.Language]
 end
diff --git a/lib/mobilizon/config.ex b/lib/mobilizon/config.ex
index e9635db9..96fcb929 100644
--- a/lib/mobilizon/config.ex
+++ b/lib/mobilizon/config.ex
@@ -99,6 +99,15 @@ defmodule Mobilizon.Config do
         )
       )
 
+  @spec instance_languages :: list(String.t())
+  def instance_languages,
+    do:
+      Mobilizon.Admin.get_admin_setting_value(
+        "instance",
+        "instance_languages",
+        instance_config()[:languages]
+      )
+
   @spec instance_registrations_allowlist :: list(String.t())
   def instance_registrations_allowlist, do: instance_config()[:registration_email_allowlist]
 
@@ -319,7 +328,8 @@ defmodule Mobilizon.Config do
       instance_privacy_policy: instance_privacy(),
       instance_privacy_policy_type: instance_privacy_type(),
       instance_privacy_policy_url: instance_privacy_url(),
-      instance_rules: instance_rules()
+      instance_rules: instance_rules(),
+      instance_languages: instance_languages()
     }
   end
 
diff --git a/mix.exs b/mix.exs
index 74b6b4a1..0d2e5e15 100644
--- a/mix.exs
+++ b/mix.exs
@@ -135,6 +135,7 @@ defmodule Mobilizon.Mixfile do
       {:sitemapper, "~> 0.4.0"},
       {:xml_builder, "~> 2.1.1", override: true},
       {:remote_ip, "~> 0.2.0"},
+      {:ex_cldr_languages, "~> 0.2.1"},
       # Dev and test dependencies
       {:phoenix_live_reload, "~> 1.2", only: [:dev, :e2e]},
       {:ex_machina, "~> 2.3", only: [:dev, :test]},
diff --git a/mix.lock b/mix.lock
index 3396bd54..31ee6337 100644
--- a/mix.lock
+++ b/mix.lock
@@ -39,6 +39,7 @@
   "ex_cldr_calendars": {:hex, :ex_cldr_calendars, "1.10.1", "7e45fd1a26711d644c599e06df132669117bee2ff8e54b93f15e14720f821a9b", [:mix], [{:calendar_interval, "~> 0.2", [hex: :calendar_interval, repo: "hexpm", optional: true]}, {:earmark, "~> 1.0", [hex: :earmark, repo: "hexpm", optional: false]}, {:ex_cldr_numbers, "~> 2.13", [hex: :ex_cldr_numbers, repo: "hexpm", optional: false]}, {:ex_cldr_units, "~> 3.0", [hex: :ex_cldr_units, repo: "hexpm", optional: true]}, {:jason, "~> 1.0", [hex: :jason, repo: "hexpm", optional: false]}], "hexpm", "82a024b160719050e1245a67c62c3be535ddeac70d8c25e0ff1ae69f860da4d1"},
   "ex_cldr_currencies": {:hex, :ex_cldr_currencies, "2.7.0", "d302aa589b4c2a28bc274b1944f879c2505aaf52f9427b04687420d55e317b8b", [:mix], [{:ex_cldr, "~> 2.14", [hex: :ex_cldr, repo: "hexpm", optional: false]}, {:jason, "~> 1.0", [hex: :jason, repo: "hexpm", optional: true]}], "hexpm", "b47efd833d5297b3644ff2b59a1d3a0c4b90214847626fbd9e52bcc3db7900b2"},
   "ex_cldr_dates_times": {:hex, :ex_cldr_dates_times, "2.5.4", "18143155be8146a3a8b3def620dc4e54b9676143e381519370b2b3fcf8deefbc", [:mix], [{:calendar_interval, "~> 0.2", [hex: :calendar_interval, repo: "hexpm", optional: true]}, {:ex_cldr_calendars, "~> 1.8", [hex: :ex_cldr_calendars, repo: "hexpm", optional: false]}, {:ex_cldr_numbers, "~> 2.15", [hex: :ex_cldr_numbers, repo: "hexpm", optional: false]}, {:jason, "~> 1.0", [hex: :jason, repo: "hexpm", optional: true]}], "hexpm", "a9cf13e6c4a42005a817cd20f82b06697595edee741b60379fbf6a207ca6134b"},
+  "ex_cldr_languages": {:hex, :ex_cldr_languages, "0.2.1", "4b7d011fc76c563b9d680fb1d1cbc46e485acd50472a22850b7642f463a750f4", [:mix], [{:ex_cldr, "~> 2.2 and >= 2.2.1", [hex: :ex_cldr, repo: "hexpm", optional: false]}, {:jason, "~> 1.0", [hex: :jason, repo: "hexpm", optional: true]}], "hexpm", "052bf33032229300d0c1b82bee277611b13ab03d0f1c15f6ce4dd60da0cfd30a"},
   "ex_cldr_numbers": {:hex, :ex_cldr_numbers, "2.15.4", "1cdeb1f6a22f31e7155edde7d51b3c95ddf6ccf60252a175c10967d4031baebd", [:mix], [{:decimal, "~> 1.6 or ~> 2.0", [hex: :decimal, repo: "hexpm", optional: false]}, {:ex_cldr, "~> 2.15", [hex: :ex_cldr, repo: "hexpm", optional: false]}, {:ex_cldr_currencies, "~> 2.6", [hex: :ex_cldr_currencies, repo: "hexpm", optional: false]}, {:jason, "~> 1.0", [hex: :jason, repo: "hexpm", optional: true]}], "hexpm", "1765b8579b4df5b9fec09bb5506841bf4a51d3dba2c51046e6af05a08fbe7ee1"},
   "ex_crypto": {:hex, :ex_crypto, "0.10.0", "af600a89b784b36613a989da6e998c1b200ff1214c3cfbaf8deca4aa2f0a1739", [:mix], [{:poison, ">= 2.0.0", [hex: :poison, repo: "hexpm", optional: false]}], "hexpm", "ccc7472cfe8a0f4565f97dce7e9280119bf15a5ea51c6535e5b65f00660cde1c"},
   "ex_doc": {:hex, :ex_doc, "0.22.6", "0fb1e09a3e8b69af0ae94c8b4e4df36995d8c88d5ec7dbd35617929144b62c00", [:mix], [{:earmark_parser, "~> 1.4.0", [hex: :earmark_parser, repo: "hexpm", optional: false]}, {:makeup_elixir, "~> 0.14", [hex: :makeup_elixir, repo: "hexpm", optional: false]}], "hexpm", "1e0aceda15faf71f1b0983165e6e7313be628a460e22a031e32913b98edbd638"},