diff --git a/packages/core/src/api/applications.ts b/packages/core/src/api/applications.ts
index 97445935d231c..168d83f3886ae 100644
--- a/packages/core/src/api/applications.ts
+++ b/packages/core/src/api/applications.ts
@@ -2,10 +2,17 @@
 
 import type { RequestData, REST } from '@discordjs/rest';
 import {
+	Routes,
+	type RESTGetAPIApplicationEmojiResult,
+	type RESTGetAPIApplicationEmojisResult,
 	type RESTGetCurrentApplicationResult,
+	type RESTPatchAPIApplicationEmojiJSONBody,
+	type RESTPatchAPIApplicationEmojiResult,
 	type RESTPatchCurrentApplicationJSONBody,
 	type RESTPatchCurrentApplicationResult,
-	Routes,
+	type RESTPostAPIApplicationEmojiJSONBody,
+	type RESTPostAPIApplicationEmojiResult,
+	type Snowflake,
 } from 'discord-api-types/v10';
 
 export class ApplicationsAPI {
@@ -34,4 +41,83 @@ export class ApplicationsAPI {
 			signal,
 		}) as Promise<RESTPatchCurrentApplicationResult>;
 	}
+
+	/**
+	 * Fetches all emojis of an application
+	 *
+	 * @see {@link https://discord.com/developers/docs/resources/emoji#list-application-emojis}
+	 * @param applicationId - The id of the application to fetch the emojis of
+	 * @param options - The options for fetching the emojis
+	 */
+	public async getEmojis(applicationId: Snowflake, { signal }: Pick<RequestData, 'signal'> = {}) {
+		return this.rest.get(Routes.applicationEmojis(applicationId), {
+			signal,
+		}) as Promise<RESTGetAPIApplicationEmojisResult>;
+	}
+
+	/**
+	 * Fetches an emoji of an application
+	 *
+	 * @see {@link https://discord.com/developers/docs/resources/emoji#get-application-emoji}
+	 * @param applicationId - The id of the application to fetch the emoji of
+	 * @param emojiId - The id of the emoji to fetch
+	 * @param options - The options for fetching the emoji
+	 */
+	public async getEmoji(applicationId: Snowflake, emojiId: Snowflake, { signal }: Pick<RequestData, 'signal'> = {}) {
+		return this.rest.get(Routes.applicationEmoji(applicationId, emojiId), {
+			signal,
+		}) as Promise<RESTGetAPIApplicationEmojiResult>;
+	}
+
+	/**
+	 * Creates a new emoji of an application
+	 *
+	 * @see {@link https://discord.com/developers/docs/resources/emoji#create-application-emoji}
+	 * @param applicationId - The id of the application to create the emoji of
+	 * @param body - The data for creating the emoji
+	 * @param options - The options for creating the emoji
+	 */
+	public async createEmoji(
+		applicationId: Snowflake,
+		body: RESTPostAPIApplicationEmojiJSONBody,
+		{ signal }: Pick<RequestData, 'signal'> = {},
+	) {
+		return this.rest.post(Routes.applicationEmojis(applicationId), {
+			body,
+			signal,
+		}) as Promise<RESTPostAPIApplicationEmojiResult>;
+	}
+
+	/**
+	 * Edits an emoji of an application
+	 *
+	 * @see {@link https://discord.com/developers/docs/resources/emoji#modify-application-emoji}
+	 * @param applicationId - The id of the application to edit the emoji of
+	 * @param emojiId - The id of the emoji to edit
+	 * @param body - The data for editing the emoji
+	 * @param options - The options for editing the emoji
+	 */
+	public async editEmoji(
+		applicationId: Snowflake,
+		emojiId: Snowflake,
+		body: RESTPatchAPIApplicationEmojiJSONBody,
+		{ signal }: Pick<RequestData, 'signal'> = {},
+	) {
+		return this.rest.patch(Routes.applicationEmoji(applicationId, emojiId), {
+			body,
+			signal,
+		}) as Promise<RESTPatchAPIApplicationEmojiResult>;
+	}
+
+	/**
+	 * Deletes an emoji of an application
+	 *
+	 * @see {@link https://discord.com/developers/docs/resources/emoji#delete-application-emoji}
+	 * @param applicationId - The id of the application to delete the emoji of
+	 * @param emojiId - The id of the emoji to delete
+	 * @param options - The options for deleting the emoji
+	 */
+	public async deleteEmoji(applicationId: Snowflake, emojiId: Snowflake, { signal }: Pick<RequestData, 'signal'> = {}) {
+		await this.rest.delete(Routes.applicationEmoji(applicationId, emojiId), { signal });
+	}
 }
diff --git a/packages/discord.js/src/index.js b/packages/discord.js/src/index.js
index 5f3442cd7caa7..5b30a29bcdd61 100644
--- a/packages/discord.js/src/index.js
+++ b/packages/discord.js/src/index.js
@@ -54,6 +54,7 @@ exports.version = require('../package.json').version;
 
 // Managers
 exports.ApplicationCommandManager = require('./managers/ApplicationCommandManager');
+exports.ApplicationEmojiManager = require('./managers/ApplicationEmojiManager');
 exports.ApplicationCommandPermissionsManager = require('./managers/ApplicationCommandPermissionsManager');
 exports.AutoModerationRuleManager = require('./managers/AutoModerationRuleManager');
 exports.BaseGuildEmojiManager = require('./managers/BaseGuildEmojiManager');
@@ -98,6 +99,7 @@ exports.Activity = require('./structures/Presence').Activity;
 exports.AnonymousGuild = require('./structures/AnonymousGuild');
 exports.Application = require('./structures/interfaces/Application');
 exports.ApplicationCommand = require('./structures/ApplicationCommand');
+exports.ApplicationEmoji = require('./structures/ApplicationEmoji');
 exports.ApplicationRoleConnectionMetadata =
   require('./structures/ApplicationRoleConnectionMetadata').ApplicationRoleConnectionMetadata;
 exports.AutocompleteInteraction = require('./structures/AutocompleteInteraction');
diff --git a/packages/discord.js/src/managers/ApplicationEmojiManager.js b/packages/discord.js/src/managers/ApplicationEmojiManager.js
new file mode 100644
index 0000000000000..4b8a716e2efe7
--- /dev/null
+++ b/packages/discord.js/src/managers/ApplicationEmojiManager.js
@@ -0,0 +1,143 @@
+'use strict';
+
+const { Collection } = require('@discordjs/collection');
+const { Routes } = require('discord-api-types/v10');
+const CachedManager = require('./CachedManager');
+const { DiscordjsTypeError, ErrorCodes } = require('../errors');
+const ApplicationEmoji = require('../structures/ApplicationEmoji');
+const { resolveImage } = require('../util/DataResolver');
+
+/**
+ * Manages API methods for ApplicationEmojis and stores their cache.
+ * @extends {CachedManager}
+ */
+class ApplicationEmojiManager extends CachedManager {
+  constructor(application, iterable) {
+    super(application.client, ApplicationEmoji, iterable);
+
+    /**
+     * The application this manager belongs to
+     * @type {ClientApplication}
+     */
+    this.application = application;
+  }
+
+  _add(data, cache) {
+    return super._add(data, cache, { extras: [this.application] });
+  }
+
+  /**
+   * Options used for creating an emoji of the application
+   * @typedef {Object} ApplicationEmojiCreateOptions
+   * @property {BufferResolvable|Base64Resolvable} attachment The image for the emoji
+   * @property {string} name The name for the emoji
+   */
+
+  /**
+   * Creates a new custom emoji of the application.
+   * @param {ApplicationEmojiCreateOptions} options Options for creating the emoji
+   * @returns {Promise<Emoji>} The created emoji
+   * @example
+   * // Create a new emoji from a URL
+   * application.emojis.create({ attachment: 'https://i.imgur.com/w3duR07.png', name: 'rip' })
+   *   .then(emoji => console.log(`Created new emoji with name ${emoji.name}!`))
+   *   .catch(console.error);
+   * @example
+   * // Create a new emoji from a file on your computer
+   * application.emojis.create({ attachment: './memes/banana.png', name: 'banana' })
+   *   .then(emoji => console.log(`Created new emoji with name ${emoji.name}!`))
+   *   .catch(console.error);
+   */
+  async create({ attachment, name }) {
+    attachment = await resolveImage(attachment);
+    if (!attachment) throw new DiscordjsTypeError(ErrorCodes.ReqResourceType);
+
+    const body = { image: attachment, name };
+
+    const emoji = await this.client.rest.post(Routes.applicationEmojis(this.application.id), { body });
+    return this._add(emoji);
+  }
+
+  /**
+   * Obtains one or more emojis from Discord, or the emoji cache if they're already available.
+   * @param {Snowflake} [id] The emoji's id
+   * @param {BaseFetchOptions} [options] Additional options for this fetch
+   * @returns {Promise<ApplicationEmoji|Collection<Snowflake, ApplicationEmoji>>}
+   * @example
+   * // Fetch all emojis from the application
+   * message.application.emojis.fetch()
+   *   .then(emojis => console.log(`There are ${emojis.size} emojis.`))
+   *   .catch(console.error);
+   * @example
+   * // Fetch a single emoji
+   * message.application.emojis.fetch('222078108977594368')
+   *   .then(emoji => console.log(`The emoji name is: ${emoji.name}`))
+   *   .catch(console.error);
+   */
+  async fetch(id, { cache = true, force = false } = {}) {
+    if (id) {
+      if (!force) {
+        const existing = this.cache.get(id);
+        if (existing) return existing;
+      }
+      const emoji = await this.client.rest.get(Routes.applicationEmoji(this.application.id, id));
+      return this._add(emoji, cache);
+    }
+
+    const { items: data } = await this.client.rest.get(Routes.applicationEmojis(this.application.id));
+    const emojis = new Collection();
+    for (const emoji of data) emojis.set(emoji.id, this._add(emoji, cache));
+    return emojis;
+  }
+
+  /**
+   * Deletes an emoji.
+   * @param {EmojiResolvable} emoji The Emoji resolvable to delete
+   * @returns {Promise<void>}
+   */
+  async delete(emoji) {
+    const id = this.resolveId(emoji);
+    if (!id) throw new DiscordjsTypeError(ErrorCodes.InvalidType, 'emoji', 'EmojiResolvable', true);
+    await this.client.rest.delete(Routes.applicationEmoji(this.application.id, id));
+  }
+
+  /**
+   * Edits an emoji.
+   * @param {EmojiResolvable} emoji The Emoji resolvable to edit
+   * @param {ApplicationEmojiEditOptions} options The options to provide
+   * @returns {Promise<ApplicationEmoji>}
+   */
+  async edit(emoji, options) {
+    const id = this.resolveId(emoji);
+    if (!id) throw new DiscordjsTypeError(ErrorCodes.InvalidType, 'emoji', 'EmojiResolvable', true);
+
+    const newData = await this.client.rest.patch(Routes.applicationEmoji(this.application.id, id), {
+      body: {
+        name: options.name,
+      },
+    });
+    const existing = this.cache.get(id);
+    if (existing) {
+      const clone = existing._clone();
+      clone._patch(newData);
+      return clone;
+    }
+    return this._add(newData);
+  }
+
+  /**
+   * Fetches the author for this emoji
+   * @param {EmojiResolvable} emoji The emoji to fetch the author of
+   * @returns {Promise<User>}
+   */
+  async fetchAuthor(emoji) {
+    const id = this.resolveId(emoji);
+    if (!id) throw new DiscordjsTypeError(ErrorCodes.InvalidType, 'emoji', 'EmojiResolvable', true);
+
+    const data = await this.client.rest.get(Routes.applicationEmoji(this.application.id, id));
+
+    return this._add(data).author;
+  }
+}
+
+module.exports = ApplicationEmojiManager;
diff --git a/packages/discord.js/src/structures/ApplicationEmoji.js b/packages/discord.js/src/structures/ApplicationEmoji.js
new file mode 100644
index 0000000000000..7c11fe1433bfc
--- /dev/null
+++ b/packages/discord.js/src/structures/ApplicationEmoji.js
@@ -0,0 +1,129 @@
+'use strict';
+
+const { Emoji } = require('./Emoji');
+
+/**
+ * Represents a custom emoji.
+ * @extends {Emoji}
+ */
+class ApplicationEmoji extends Emoji {
+  constructor(client, data, application) {
+    super(client, data);
+
+    /**
+     * The application this emoji originates from
+     * @type {ClientApplication}
+     */
+    this.application = application;
+
+    /**
+     * The user who created this emoji
+     * @type {?User}
+     */
+    this.author = null;
+
+    this.managed = null;
+    this.requiresColons = null;
+
+    this._patch(data);
+  }
+
+  /**
+   * The application this emoji originates from
+   * @type {ClientApplication}
+   * @name ApplicationEmoji#application
+   */
+
+  _clone() {
+    const clone = super._clone();
+    return clone;
+  }
+
+  _patch(data) {
+    if ('name' in data) this.name = data.name;
+    if (data.user) this.author = this.client.users._add(data.user);
+
+    if ('managed' in data) {
+      /**
+       * Whether this emoji is managed by an external service
+       * @type {?boolean}
+       */
+      this.managed = data.managed;
+    }
+
+    if ('require_colons' in data) {
+      /**
+       * Whether or not this emoji requires colons surrounding it
+       * @type {?boolean}
+       */
+      this.requiresColons = data.require_colons;
+    }
+  }
+
+  /**
+   * Fetches the author for this emoji
+   * @returns {Promise<User>}
+   */
+  fetchAuthor() {
+    return this.application.emojis.fetchAuthor(this);
+  }
+
+  /**
+   * Data for editing an emoji.
+   * @typedef {Object} ApplicationEmojiEditOptions
+   * @property {string} [name] The name of the emoji
+   */
+
+  /**
+   * Edits the emoji.
+   * @param {ApplicationEmojiEditOptions} options The options to provide
+   * @returns {Promise<ApplicationEmoji>}
+   * @example
+   * // Edit an emoji
+   * emoji.edit({ name: 'newemoji' })
+   *   .then(emoji => console.log(`Edited emoji ${emoji}`))
+   *   .catch(console.error);
+   */
+  edit(options) {
+    return this.application.emojis.edit(this.id, options);
+  }
+
+  /**
+   * Sets the name of the emoji.
+   * @param {string} name The new name for the emoji
+   * @returns {Promise<ApplicationEmoji>}
+   */
+  setName(name) {
+    return this.edit({ name });
+  }
+
+  /**
+   * Deletes the emoji.
+   * @returns {Promise<ApplicationEmoji>}
+   */
+  async delete() {
+    await this.application.emojis.delete(this.id);
+    return this;
+  }
+
+  /**
+   * Whether this emoji is the same as another one.
+   * @param {ApplicationEmoji|APIEmoji} other The emoji to compare it to
+   * @returns {boolean}
+   */
+  equals(other) {
+    if (other instanceof ApplicationEmoji) {
+      return (
+        other.animated === this.animated &&
+        other.id === this.id &&
+        other.name === this.name &&
+        other.managed === this.managed &&
+        other.requiresColons === this.requiresColons
+      );
+    }
+
+    return other.id === this.id && other.name === this.name;
+  }
+}
+
+module.exports = ApplicationEmoji;
diff --git a/packages/discord.js/src/structures/ClientApplication.js b/packages/discord.js/src/structures/ClientApplication.js
index 64762a1df6dac..cd4271fa64162 100644
--- a/packages/discord.js/src/structures/ClientApplication.js
+++ b/packages/discord.js/src/structures/ClientApplication.js
@@ -7,6 +7,7 @@ const { SKU } = require('./SKU');
 const Team = require('./Team');
 const Application = require('./interfaces/Application');
 const ApplicationCommandManager = require('../managers/ApplicationCommandManager');
+const ApplicationEmojiManager = require('../managers/ApplicationEmojiManager');
 const { EntitlementManager } = require('../managers/EntitlementManager');
 const ApplicationFlagsBitField = require('../util/ApplicationFlagsBitField');
 const { resolveImage } = require('../util/DataResolver');
@@ -32,6 +33,12 @@ class ClientApplication extends Application {
      */
     this.commands = new ApplicationCommandManager(this.client);
 
+    /**
+     * The application emoji manager for this application
+     * @type {ApplicationEmojiManager}
+     */
+    this.emojis = new ApplicationEmojiManager(this);
+
     /**
      * The entitlement manager for this application
      * @type {EntitlementManager}
diff --git a/packages/discord.js/src/structures/Emoji.js b/packages/discord.js/src/structures/Emoji.js
index f4c93e757c04c..9451fb043b0b3 100644
--- a/packages/discord.js/src/structures/Emoji.js
+++ b/packages/discord.js/src/structures/Emoji.js
@@ -8,7 +8,7 @@ const Base = require('./Base');
 let deprecationEmittedForURL = false;
 
 /**
- * Represents an emoji, see {@link GuildEmoji} and {@link ReactionEmoji}.
+ * Represents an emoji, see {@link ApplicationEmoji}, {@link GuildEmoji} and {@link ReactionEmoji}.
  * @extends {Base}
  */
 class Emoji extends Base {
diff --git a/packages/discord.js/typings/index.d.ts b/packages/discord.js/typings/index.d.ts
index b1071e1d35588..61f8a9bd88ce7 100644
--- a/packages/discord.js/typings/index.d.ts
+++ b/packages/discord.js/typings/index.d.ts
@@ -191,6 +191,7 @@ import {
   RawAnonymousGuildData,
   RawApplicationCommandData,
   RawApplicationData,
+  RawApplicationEmojiData,
   RawBaseGuildData,
   RawChannelData,
   RawClientApplicationData,
@@ -1061,6 +1062,7 @@ export class ClientApplication extends Application {
   public botRequireCodeGrant: boolean | null;
   public bot: User | null;
   public commands: ApplicationCommandManager;
+  public emojis: ApplicationEmojiManager;
   public entitlements: EntitlementManager;
   public guildId: Snowflake | null;
   public get guild(): Guild | null;
@@ -1342,6 +1344,41 @@ export class Emoji extends Base {
   public toString(): string;
 }
 
+export interface ApplicationEmojiCreateOptions {
+  attachment: BufferResolvable | Base64Resolvable;
+  name: string;
+}
+
+export interface ApplicationEmojiEditOptions {
+  name?: string;
+}
+
+export class ApplicationEmoji extends Emoji {
+  private constructor(client: Client<true>, data: RawApplicationEmojiData, application: ClientApplication);
+
+  public application: ClientApplication;
+  public author: User | null;
+  public id: Snowflake;
+  public managed: boolean | null;
+  public requiresColons: boolean | null;
+  public delete(): Promise<ApplicationEmoji>;
+  public edit(options: ApplicationEmojiEditOptions): Promise<ApplicationEmoji>;
+  public equals(other: ApplicationEmoji | unknown): boolean;
+  public fetchAuthor(): Promise<User>;
+  public setName(name: string): Promise<ApplicationEmoji>;
+}
+
+export class ApplicationEmojiManager extends CachedManager<Snowflake, ApplicationEmoji, EmojiResolvable> {
+  private constructor(application: ClientApplication, iterable?: Iterable<RawApplicationEmojiData>);
+  public application: ClientApplication;
+  public create(options: ApplicationEmojiCreateOptions): Promise<ApplicationEmoji>;
+  public fetch(id: Snowflake, options?: BaseFetchOptions): Promise<ApplicationEmoji>;
+  public fetch(id?: undefined, options?: BaseFetchOptions): Promise<Collection<Snowflake, ApplicationEmoji>>;
+  public fetchAuthor(emoji: EmojiResolvable): Promise<User>;
+  public delete(emoji: EmojiResolvable): Promise<void>;
+  public edit(emoji: EmojiResolvable, options: ApplicationEmojiEditOptions): Promise<ApplicationEmoji>;
+}
+
 export class Entitlement extends Base {
   private constructor(client: Client<true>, data: APIEntitlement);
   public id: Snowflake;
diff --git a/packages/discord.js/typings/index.test-d.ts b/packages/discord.js/typings/index.test-d.ts
index 407f6023e8d26..e43dbf314f5db 100644
--- a/packages/discord.js/typings/index.test-d.ts
+++ b/packages/discord.js/typings/index.test-d.ts
@@ -205,6 +205,8 @@ import {
   ChannelSelectMenuComponent,
   MentionableSelectMenuComponent,
   Poll,
+  ApplicationEmoji,
+  ApplicationEmojiManager,
 } from '.';
 import { expectAssignable, expectDeprecated, expectNotAssignable, expectNotType, expectType } from 'tsd';
 import type { ContextMenuCommandBuilder, SlashCommandBuilder } from '@discordjs/builders';
@@ -1694,6 +1696,11 @@ expectType<Promise<Collection<Snowflake, GuildEmoji>>>(guildEmojiManager.fetch()
 expectType<Promise<Collection<Snowflake, GuildEmoji>>>(guildEmojiManager.fetch(undefined, {}));
 expectType<Promise<GuildEmoji>>(guildEmojiManager.fetch('0'));
 
+declare const applicationEmojiManager: ApplicationEmojiManager;
+expectType<Promise<Collection<Snowflake, ApplicationEmoji>>>(applicationEmojiManager.fetch());
+expectType<Promise<Collection<Snowflake, ApplicationEmoji>>>(applicationEmojiManager.fetch(undefined, {}));
+expectType<Promise<ApplicationEmoji>>(applicationEmojiManager.fetch('0'));
+
 declare const guildBanManager: GuildBanManager;
 {
   expectType<Promise<GuildBan>>(guildBanManager.fetch('1234567890'));
diff --git a/packages/discord.js/typings/rawDataTypes.d.ts b/packages/discord.js/typings/rawDataTypes.d.ts
index bb54ad696f80e..1113ee6883e62 100644
--- a/packages/discord.js/typings/rawDataTypes.d.ts
+++ b/packages/discord.js/typings/rawDataTypes.d.ts
@@ -102,6 +102,7 @@ export type RawEmojiData =
   | RawReactionEmojiData
   | GatewayActivityEmoji
   | Omit<Partial<APIPartialEmoji>, 'animated'>;
+export type RawApplicationEmojiData = APIEmoji;
 export type RawGuildEmojiData = APIEmoji;
 export type RawReactionEmojiData = APIEmoji | APIPartialEmoji;