diff --git a/packages/discord.js/src/structures/Channel.js b/packages/discord.js/src/structures/Channel.js
index bba09cdf6f04..18060d45e202 100644
--- a/packages/discord.js/src/structures/Channel.js
+++ b/packages/discord.js/src/structures/Channel.js
@@ -181,6 +181,14 @@ class Channel extends Base {
     return 'messages' in this;
   }
 
+  /**
+   * Indicates whether this channel is DM-based (either a {@link DMChannel} or a {@link GroupDMChannel}).
+   * @returns {boolean}
+   */
+  isDMBased() {
+    return [ChannelType.DM, ChannelType.GroupDM].includes(this.type);
+  }
+
   /**
    * Indicates whether this channel is {@link BaseGuildVoiceChannel voice-based}.
    * @returns {boolean}
diff --git a/packages/discord.js/typings/index.d.ts b/packages/discord.js/typings/index.d.ts
index 56db640aa976..a577fd6a615a 100644
--- a/packages/discord.js/typings/index.d.ts
+++ b/packages/discord.js/typings/index.d.ts
@@ -503,6 +503,7 @@ export abstract class Channel extends Base {
   public isThread(): this is ThreadChannel;
   public isStage(): this is StageChannel;
   public isTextBased(): this is TextBasedChannel;
+  public isDMBased(): this is PartialGroupDMChannel | DMChannel;
   public isVoiceBased(): this is VoiceBasedChannel;
   public toString(): ChannelMention;
 }
@@ -1688,6 +1689,7 @@ export class OAuth2Guild extends BaseGuild {
 
 export class PartialGroupDMChannel extends Channel {
   private constructor(client: Client, data: RawPartialGroupDMChannelData);
+  public type: ChannelType.GroupDM;
   public name: string | null;
   public icon: string | null;
   public recipients: PartialRecipient[];