diff --git a/packages/discord.js/src/structures/ThreadChannel.js b/packages/discord.js/src/structures/ThreadChannel.js
index 129fa3ae3..d3b92dd80 100644
--- a/packages/discord.js/src/structures/ThreadChannel.js
+++ b/packages/discord.js/src/structures/ThreadChannel.js
@@ -287,11 +287,17 @@ class ThreadChannel extends BaseChannel {
     return this.parent?.permissionsFor(memberOrRole, checkAdmin) ?? null;
   }
 
+  /**
+   * Options used to fetch a thread owner.
+   * @typedef {BaseFetchOptions} FetchThreadOwnerOptions
+   * @property {boolean} [withMember] Whether to also return the guild member associated with this thread member
+   */
+
   /**
    * Fetches the owner of this thread. If the thread member object isn't needed,
    * use {@link ThreadChannel#ownerId} instead.
-   * @param {BaseFetchOptions} [options] The options for fetching the member
-   * @returns {Promise<?ThreadMember>}
+   * @param {FetchThreadOwnerOptions} [options] Options for fetching the owner
+   * @returns {Promise<ThreadMember>}
    */
   async fetchOwner(options) {
     if (!this.ownerId) {
diff --git a/packages/discord.js/typings/index.d.ts b/packages/discord.js/typings/index.d.ts
index 0661f25ea..afb73b20a 100644
--- a/packages/discord.js/typings/index.d.ts
+++ b/packages/discord.js/typings/index.d.ts
@@ -3318,7 +3318,7 @@ export class ThreadChannel<ThreadOnly extends boolean = boolean> extends BaseCha
     memberOrRole: GuildMemberResolvable | RoleResolvable,
     checkAdmin?: boolean,
   ): Readonly<PermissionsBitField> | null;
-  public fetchOwner(options?: BaseFetchOptions): Promise<ThreadMember | null>;
+  public fetchOwner(options?: FetchThreadOwnerOptions): Promise<ThreadMember>;
   public fetchStarterMessage(options?: BaseFetchOptions): Promise<Message<true> | null>;
   public setArchived(archived?: boolean, reason?: string): Promise<this>;
   public setAutoArchiveDuration(autoArchiveDuration: ThreadAutoArchiveDuration, reason?: string): Promise<this>;
@@ -5565,6 +5565,10 @@ export interface FetchThreadMemberOptions extends BaseFetchOptions {
   withMember?: boolean;
 }
 
+export interface FetchThreadOwnerOptions extends BaseFetchOptions {
+  withMember?: boolean;
+}
+
 export interface FetchThreadMembersWithGuildMemberDataOptions {
   withMember: true;
   after?: Snowflake;