diff --git a/packages/discord.js/src/client/websocket/handlers/APPLICATION_COMMAND_CREATE.js b/packages/discord.js/src/client/websocket/handlers/APPLICATION_COMMAND_CREATE.js
deleted file mode 100644
index 17af7d58e2f2..000000000000
--- a/packages/discord.js/src/client/websocket/handlers/APPLICATION_COMMAND_CREATE.js
+++ /dev/null
@@ -1,18 +0,0 @@
-'use strict';
-
-const { Events } = require('../../../util/Constants');
-
-module.exports = (client, { d: data }) => {
-  const commandManager = data.guild_id ? client.guilds.cache.get(data.guild_id)?.commands : client.application.commands;
-  if (!commandManager) return;
-
-  const command = commandManager._add(data, data.application_id === client.application.id);
-
-  /**
-   * Emitted when a guild application command is created.
-   * @event Client#applicationCommandCreate
-   * @param {ApplicationCommand} command The command which was created
-   * @deprecated See {@link https://github.com/discord/discord-api-docs/issues/3690 this issue} for more information.
-   */
-  client.emit(Events.APPLICATION_COMMAND_CREATE, command);
-};
diff --git a/packages/discord.js/src/client/websocket/handlers/APPLICATION_COMMAND_DELETE.js b/packages/discord.js/src/client/websocket/handlers/APPLICATION_COMMAND_DELETE.js
deleted file mode 100644
index 4b09274ddb9f..000000000000
--- a/packages/discord.js/src/client/websocket/handlers/APPLICATION_COMMAND_DELETE.js
+++ /dev/null
@@ -1,20 +0,0 @@
-'use strict';
-
-const { Events } = require('../../../util/Constants');
-
-module.exports = (client, { d: data }) => {
-  const commandManager = data.guild_id ? client.guilds.cache.get(data.guild_id)?.commands : client.application.commands;
-  if (!commandManager) return;
-
-  const isOwn = data.application_id === client.application.id;
-  const command = commandManager._add(data, isOwn);
-  if (isOwn) commandManager.cache.delete(data.id);
-
-  /**
-   * Emitted when a guild application command is deleted.
-   * @event Client#applicationCommandDelete
-   * @param {ApplicationCommand} command The command which was deleted
-   * @deprecated See {@link https://github.com/discord/discord-api-docs/issues/3690 this issue} for more information.
-   */
-  client.emit(Events.APPLICATION_COMMAND_DELETE, command);
-};
diff --git a/packages/discord.js/src/client/websocket/handlers/APPLICATION_COMMAND_UPDATE.js b/packages/discord.js/src/client/websocket/handlers/APPLICATION_COMMAND_UPDATE.js
deleted file mode 100644
index 730d7f1e3a36..000000000000
--- a/packages/discord.js/src/client/websocket/handlers/APPLICATION_COMMAND_UPDATE.js
+++ /dev/null
@@ -1,20 +0,0 @@
-'use strict';
-
-const { Events } = require('../../../util/Constants');
-
-module.exports = (client, { d: data }) => {
-  const commandManager = data.guild_id ? client.guilds.cache.get(data.guild_id)?.commands : client.application.commands;
-  if (!commandManager) return;
-
-  const oldCommand = commandManager.cache.get(data.id)?._clone() ?? null;
-  const newCommand = commandManager._add(data, data.application_id === client.application.id);
-
-  /**
-   * Emitted when a guild application command is updated.
-   * @event Client#applicationCommandUpdate
-   * @param {?ApplicationCommand} oldCommand The command before the update
-   * @param {ApplicationCommand} newCommand The command after the update
-   * @deprecated See {@link https://github.com/discord/discord-api-docs/issues/3690 this issue} for more information.
-   */
-  client.emit(Events.APPLICATION_COMMAND_UPDATE, oldCommand, newCommand);
-};
diff --git a/packages/discord.js/src/util/Constants.js b/packages/discord.js/src/util/Constants.js
index 0431cebc024e..0dcf301803e8 100644
--- a/packages/discord.js/src/util/Constants.js
+++ b/packages/discord.js/src/util/Constants.js
@@ -130,18 +130,6 @@ exports.Events = {
   API_RESPONSE: 'apiResponse',
   API_REQUEST: 'apiRequest',
   CLIENT_READY: 'ready',
-  /**
-   * @deprecated See {@link https://github.com/discord/discord-api-docs/issues/3690 this issue} for more information.
-   */
-  APPLICATION_COMMAND_CREATE: 'applicationCommandCreate',
-  /**
-   * @deprecated See {@link https://github.com/discord/discord-api-docs/issues/3690 this issue} for more information.
-   */
-  APPLICATION_COMMAND_DELETE: 'applicationCommandDelete',
-  /**
-   * @deprecated See {@link https://github.com/discord/discord-api-docs/issues/3690 this issue} for more information.
-   */
-  APPLICATION_COMMAND_UPDATE: 'applicationCommandUpdate',
   GUILD_CREATE: 'guildCreate',
   GUILD_DELETE: 'guildDelete',
   GUILD_UPDATE: 'guildUpdate',
@@ -238,9 +226,6 @@ exports.PartialTypes = keyMirror(['USER', 'CHANNEL', 'GUILD_MEMBER', 'MESSAGE',
  * The type of a WebSocket message event, e.g. `MESSAGE_CREATE`. Here are the available events:
  * * READY
  * * RESUMED
- * * APPLICATION_COMMAND_CREATE (deprecated)
- * * APPLICATION_COMMAND_DELETE (deprecated)
- * * APPLICATION_COMMAND_UPDATE (deprecated)
  * * GUILD_CREATE
  * * GUILD_DELETE
  * * GUILD_UPDATE
@@ -297,9 +282,6 @@ exports.PartialTypes = keyMirror(['USER', 'CHANNEL', 'GUILD_MEMBER', 'MESSAGE',
 exports.WSEvents = keyMirror([
   'READY',
   'RESUMED',
-  'APPLICATION_COMMAND_CREATE',
-  'APPLICATION_COMMAND_DELETE',
-  'APPLICATION_COMMAND_UPDATE',
   'GUILD_CREATE',
   'GUILD_DELETE',
   'GUILD_UPDATE',
diff --git a/packages/discord.js/typings/index.d.ts b/packages/discord.js/typings/index.d.ts
index 2ba9a42ce624..4ba74fe42392 100644
--- a/packages/discord.js/typings/index.d.ts
+++ b/packages/discord.js/typings/index.d.ts
@@ -3889,12 +3889,6 @@ export interface BaseClientEvents {
 }
 
 export interface ClientEvents extends BaseClientEvents {
-  /** @deprecated See [this issue](https://github.com/discord/discord-api-docs/issues/3690) for more information. */
-  applicationCommandCreate: [command: ApplicationCommand];
-  /** @deprecated See [this issue](https://github.com/discord/discord-api-docs/issues/3690) for more information. */
-  applicationCommandDelete: [command: ApplicationCommand];
-  /** @deprecated See [this issue](https://github.com/discord/discord-api-docs/issues/3690) for more information. */
-  applicationCommandUpdate: [oldCommand: ApplicationCommand | null, newCommand: ApplicationCommand];
   cacheSweep: [message: string];
   channelCreate: [channel: NonThreadGuildBasedChannel];
   channelDelete: [channel: DMChannel | NonThreadGuildBasedChannel];
@@ -4147,12 +4141,6 @@ export interface ConstantsEvents {
   API_RESPONSE: 'apiResponse';
   API_REQUEST: 'apiRequest';
   CLIENT_READY: 'ready';
-  /** @deprecated See [this issue](https://github.com/discord/discord-api-docs/issues/3690) for more information. */
-  APPLICATION_COMMAND_CREATE: 'applicationCommandCreate';
-  /** @deprecated See [this issue](https://github.com/discord/discord-api-docs/issues/3690) for more information. */
-  APPLICATION_COMMAND_DELETE: 'applicationCommandDelete';
-  /** @deprecated See [this issue](https://github.com/discord/discord-api-docs/issues/3690) for more information. */
-  APPLICATION_COMMAND_UPDATE: 'applicationCommandUpdate';
   GUILD_CREATE: 'guildCreate';
   GUILD_DELETE: 'guildDelete';
   GUILD_UPDATE: 'guildUpdate';
@@ -5716,9 +5704,6 @@ export interface WelcomeScreenEditData {
 export type WSEventType =
   | 'READY'
   | 'RESUMED'
-  | 'APPLICATION_COMMAND_CREATE'
-  | 'APPLICATION_COMMAND_DELETE'
-  | 'APPLICATION_COMMAND_UPDATE'
   | 'GUILD_CREATE'
   | 'GUILD_DELETE'
   | 'GUILD_UPDATE'