diff --git a/.gitignore b/.gitignore
index 5623f0cfb08d..a7b124b84d65 100644
--- a/.gitignore
+++ b/.gitignore
@@ -28,3 +28,4 @@ docs/docs.json
 .tmp/
 .idea/
 .DS_Store
+.yarn/
diff --git a/src/structures/BaseCommandInteraction.js b/src/structures/BaseCommandInteraction.js
index 0ddaf6bfee48..a24a5f0c893b 100644
--- a/src/structures/BaseCommandInteraction.js
+++ b/src/structures/BaseCommandInteraction.js
@@ -3,6 +3,7 @@
 const { Collection } = require('@discordjs/collection');
 const Interaction = require('./Interaction');
 const InteractionWebhook = require('./InteractionWebhook');
+const MessageAttachment = require('./MessageAttachment');
 const InteractionResponses = require('./interfaces/InteractionResponses');
 const { ApplicationCommandOptionTypes } = require('../util/Constants');
 
@@ -76,6 +77,7 @@ class BaseCommandInteraction extends Interaction {
    * @property {Collection<Snowflake, Role|APIRole>} [roles] The resolved roles
    * @property {Collection<Snowflake, Channel|APIChannel>} [channels] The resolved channels
    * @property {Collection<Snowflake, Message|APIMessage>} [messages] The resolved messages
+   * @property {Collection<Snowflake, MessageAttachment>} [attachments] The resolved attachments
    */
 
   /**
@@ -84,7 +86,7 @@ class BaseCommandInteraction extends Interaction {
    * @returns {CommandInteractionResolvedData}
    * @private
    */
-  transformResolved({ members, users, channels, roles, messages }) {
+  transformResolved({ members, users, channels, roles, messages, attachments }) {
     const result = {};
 
     if (members) {
@@ -123,6 +125,14 @@ class BaseCommandInteraction extends Interaction {
       }
     }
 
+    if (attachments) {
+      result.attachments = new Collection();
+      for (const attachment of Object.values(attachments)) {
+        const patched = new MessageAttachment(attachment.url, attachment.filename, attachment);
+        result.attachments.set(attachment.id, patched);
+      }
+    }
+
     return result;
   }
 
@@ -139,6 +149,7 @@ class BaseCommandInteraction extends Interaction {
    * @property {GuildMember|APIGuildMember} [member] The resolved member
    * @property {GuildChannel|ThreadChannel|APIChannel} [channel] The resolved channel
    * @property {Role|APIRole} [role] The resolved role
+   * @property {MessageAttachment} [attachment] The resolved attachment
    */
 
   /**
@@ -169,6 +180,9 @@ class BaseCommandInteraction extends Interaction {
 
       const role = resolved.roles?.[option.value];
       if (role) result.role = this.guild?.roles._add(role) ?? role;
+
+      const attachment = resolved.attachments?.[option.value];
+      if (attachment) result.attachment = new MessageAttachment(attachment.url, attachment.filename, attachment);
     }
 
     return result;
diff --git a/src/structures/CommandInteractionOptionResolver.js b/src/structures/CommandInteractionOptionResolver.js
index c83fd8e2f00e..10da7b9957ac 100644
--- a/src/structures/CommandInteractionOptionResolver.js
+++ b/src/structures/CommandInteractionOptionResolver.js
@@ -251,6 +251,17 @@ class CommandInteractionOptionResolver {
     if (!focusedOption) throw new TypeError('AUTOCOMPLETE_INTERACTION_OPTION_NO_FOCUSED_OPTION');
     return getFull ? focusedOption : focusedOption.value;
   }
+
+  /**
+   * Gets an attachment option.
+   * @param {string} name The name of the option.
+   * @param {boolean} [required=false] Whether to throw an error if the option is not found.
+   * @returns {?MessageAttachment} The value of the option, or null if not set and not required.
+   */
+  getAttachment(name, required = false) {
+    const option = this._getTypedOption(name, 'ATTACHMENT', ['attachment'], required);
+    return option?.attachment ?? null;
+  }
 }
 
 module.exports = CommandInteractionOptionResolver;
diff --git a/src/util/Constants.js b/src/util/Constants.js
index 11c455ec1a31..14b0e526c906 100644
--- a/src/util/Constants.js
+++ b/src/util/Constants.js
@@ -1040,6 +1040,7 @@ exports.ApplicationCommandOptionTypes = createEnum([
   'ROLE',
   'MENTIONABLE',
   'NUMBER',
+  'ATTACHMENT',
 ]);
 
 /**
diff --git a/typings/enums.d.ts b/typings/enums.d.ts
index f8efb4a170f5..d67d310eb5f2 100644
--- a/typings/enums.d.ts
+++ b/typings/enums.d.ts
@@ -27,6 +27,7 @@ export const enum ApplicationCommandOptionTypes {
   ROLE = 8,
   MENTIONABLE = 9,
   NUMBER = 10,
+  ATTACHMENT = 11,
 }
 
 export const enum ApplicationCommandPermissionTypes {
diff --git a/typings/index.d.ts b/typings/index.d.ts
index b6adc8950050..4c6659f08abf 100644
--- a/typings/index.d.ts
+++ b/typings/index.d.ts
@@ -335,6 +335,7 @@ export abstract class BaseCommandInteraction<Cached extends CacheType = CacheTyp
     | 'getBoolean'
     | 'getSubcommandGroup'
     | 'getSubcommand'
+    | 'getAttachment'
   >;
   public channelId: Snowflake;
   public commandId: Snowflake;
@@ -798,6 +799,11 @@ export class CommandInteractionOptionResolver<Cached extends CacheType = CacheTy
   public getMessage(name: string, required?: boolean): NonNullable<CommandInteractionOption<Cached>['message']> | null;
   public getFocused(getFull: true): ApplicationCommandOptionChoice;
   public getFocused(getFull?: boolean): string | number;
+  public getAttachment(name: string, required: true): NonNullable<CommandInteractionOption<Cached>['attachment']>;
+  public getAttachment(
+    name: string,
+    required?: boolean,
+  ): NonNullable<CommandInteractionOption<Cached>['attachment']> | null;
 }
 
 export class ContextMenuInteraction<Cached extends CacheType = CacheType> extends BaseCommandInteraction<Cached> {
@@ -4102,6 +4108,7 @@ export interface CommandInteractionOption<Cached extends CacheType = CacheType>
   channel?: CacheTypeReducer<Cached, GuildBasedChannel, APIInteractionDataResolvedChannel>;
   role?: CacheTypeReducer<Cached, Role, APIRole>;
   message?: GuildCacheMessage<Cached>;
+  attachment?: MessageAttachment;
 }
 
 export interface CommandInteractionResolvedData<Cached extends CacheType = CacheType> {
@@ -4110,6 +4117,7 @@ export interface CommandInteractionResolvedData<Cached extends CacheType = Cache
   roles?: Collection<Snowflake, CacheTypeReducer<Cached, Role, APIRole>>;
   channels?: Collection<Snowflake, CacheTypeReducer<Cached, AnyChannel, APIInteractionDataResolvedChannel>>;
   messages?: Collection<Snowflake, CacheTypeReducer<Cached, Message, APIMessage>>;
+  attachments?: Collection<Snowflake, MessageAttachment>;
 }
 
 export interface ConstantsClientApplicationAssetTypes {