diff --git a/src/vs/editor/common/modes.ts b/src/vs/editor/common/modes.ts
index a1ae368dbe6..ec137f5bd5b 100644
--- a/src/vs/editor/common/modes.ts
+++ b/src/vs/editor/common/modes.ts
@@ -1253,6 +1253,7 @@ export interface CommentThread2 {
 	threadId: string;
 	resource: string;
 	range: IRange;
+	label: string;
 	comments: Comment[];
 	onDidChangeComments: Event<Comment[]>;
 	collapsibleState?: CommentThreadCollapsibleState;
@@ -1261,6 +1262,7 @@ export interface CommentThread2 {
 	acceptInputCommands: Command[];
 	onDidChangeAcceptInputCommands: Event<Command[]>;
 	onDidChangeRange: Event<IRange>;
+	onDidChangeLabel: Event<string>;
 	onDidChangeCollasibleState: Event<CommentThreadCollapsibleState>;
 }
 
@@ -1322,6 +1324,7 @@ export interface Comment {
 	readonly deleteCommand?: Command;
 	readonly isDraft?: boolean;
 	readonly commentReactions?: CommentReaction[];
+	readonly label?: string;
 }
 
 /**
diff --git a/src/vs/vscode.proposed.d.ts b/src/vs/vscode.proposed.d.ts
index a882a05d59f..5080793d34a 100644
--- a/src/vs/vscode.proposed.d.ts
+++ b/src/vs/vscode.proposed.d.ts
@@ -800,6 +800,11 @@ declare module 'vscode' {
 		 */
 		range: Range;
 
+		/**
+		 * Label describing the [Comment Thread](#CommentThread)
+		 */
+		label?: string;
+
 		/**
 		 * The ordered comments of the thread.
 		 */
@@ -827,6 +832,11 @@ declare module 'vscode' {
 		 */
 		body: MarkdownString;
 
+		/**
+		 * Label describing the [Comment](#Comment)
+		 */
+		label?: string;
+
 		/**
 		 * The display name of the user who created the comment
 		 */
diff --git a/src/vs/workbench/api/electron-browser/mainThreadComments.ts b/src/vs/workbench/api/electron-browser/mainThreadComments.ts
index 7ef63a775e2..2f851f1e3bc 100644
--- a/src/vs/workbench/api/electron-browser/mainThreadComments.ts
+++ b/src/vs/workbench/api/electron-browser/mainThreadComments.ts
@@ -94,6 +94,20 @@ export class MainThreadCommentThread implements modes.CommentThread2 {
 	private _onDidChangeInput = new Emitter<modes.CommentInput | undefined>();
 	get onDidChangeInput(): Event<modes.CommentInput | undefined> { return this._onDidChangeInput.event; }
 
+	private _label: string;
+
+	get label(): string {
+		return this._label;
+	}
+
+	set label(label: string) {
+		this._label = label;
+	}
+
+	private _onDidChangeLabel = new Emitter<string>();
+	get onDidChangeLabel(): Event<string> { return this._onDidChangeLabel.event; }
+
+
 	public get comments(): modes.Comment[] {
 		return this._comments;
 	}
@@ -263,6 +277,11 @@ export class MainThreadCommentController {
 		thread.range = range;
 	}
 
+	updateCommentThreadLabel(commentThreadHandle: number, label: string) {
+		let thread = this._threads.get(commentThreadHandle);
+		thread.label = label;
+	}
+
 	updateInput(input: string) {
 		let thread = this.activeCommentThread;
 
@@ -445,6 +464,16 @@ export class MainThreadComments extends Disposable implements MainThreadComments
 		provider.updateCommentThreadRange(commentThreadHandle, range);
 	}
 
+	$updateCommentThreadLabel(handle: number, commentThreadHandle: number, label: string): void {
+		let provider = this._commentControllers.get(handle);
+
+		if (!provider) {
+			return;
+		}
+
+		provider.updateCommentThreadLabel(commentThreadHandle, label);
+	}
+
 	$registerDocumentCommentProvider(handle: number, features: CommentProviderFeatures): void {
 		this._documentProviders.set(handle, undefined);
 		const handler = new MainThreadDocumentCommentProvider(this._proxy, handle, features);
diff --git a/src/vs/workbench/api/node/extHost.protocol.ts b/src/vs/workbench/api/node/extHost.protocol.ts
index 831c2bb46cc..5b6c038376c 100644
--- a/src/vs/workbench/api/node/extHost.protocol.ts
+++ b/src/vs/workbench/api/node/extHost.protocol.ts
@@ -127,6 +127,7 @@ export interface MainThreadCommentsShape extends IDisposable {
 	$updateCommentThreadCommands(handle: number, commentThreadHandle: number, acceptInputCommands: modes.Command[]): void;
 	$updateCommentThreadCollapsibleState(handle: number, commentThreadHandle: number, collapseState: modes.CommentThreadCollapsibleState): void;
 	$updateCommentThreadRange(handle: number, commentThreadHandle: number, range: IRange): void;
+	$updateCommentThreadLabel(handle: number, commentThreadHandle: number, label: string): void;
 	$registerDocumentCommentProvider(handle: number, features: CommentProviderFeatures): void;
 	$unregisterDocumentCommentProvider(handle: number): void;
 	$registerWorkspaceCommentProvider(handle: number, extensionId: ExtensionIdentifier): void;
diff --git a/src/vs/workbench/api/node/extHostComments.ts b/src/vs/workbench/api/node/extHostComments.ts
index c4555575aa4..4138ce9f911 100644
--- a/src/vs/workbench/api/node/extHostComments.ts
+++ b/src/vs/workbench/api/node/extHostComments.ts
@@ -308,6 +308,17 @@ export class ExtHostCommentThread implements vscode.CommentThread {
 		return this._range;
 	}
 
+	private _label: string;
+
+	get label(): string {
+		return this._label;
+	}
+
+	set label(label: string) {
+		this._label = label;
+		this._proxy.$updateCommentThreadLabel(this._commentControlHandle, this.handle, this._label);
+	}
+
 	private _comments: vscode.Comment[] = [];
 
 	get comments(): vscode.Comment[] {
@@ -557,7 +568,8 @@ function convertToModeComment(vscodeComment: vscode.Comment, commandsConverter:
 		userIconPath: iconPath,
 		isDraft: vscodeComment.isDraft,
 		editCommand: vscodeComment.editCommand ? commandsConverter.toInternal(vscodeComment.editCommand) : undefined,
-		deleteCommand: vscodeComment.editCommand ? commandsConverter.toInternal(vscodeComment.deleteCommand) : undefined
+		deleteCommand: vscodeComment.editCommand ? commandsConverter.toInternal(vscodeComment.deleteCommand) : undefined,
+		label: vscodeComment.label
 	};
 }
 
diff --git a/src/vs/workbench/contrib/comments/electron-browser/commentNode.ts b/src/vs/workbench/contrib/comments/electron-browser/commentNode.ts
index 1ece57bc8d9..d809d163a50 100644
--- a/src/vs/workbench/contrib/comments/electron-browser/commentNode.ts
+++ b/src/vs/workbench/contrib/comments/electron-browser/commentNode.ts
@@ -508,7 +508,9 @@ export class CommentNode extends Disposable {
 
 		this.comment = newComment;
 
-		if (newComment.isDraft) {
+		if (newComment.label) {
+			this._isPendingLabel.innerText = newComment.label;
+		} else if (newComment.isDraft) {
 			this._isPendingLabel.innerText = 'Pending';
 		} else {
 			this._isPendingLabel.innerText = '';
diff --git a/src/vs/workbench/contrib/comments/electron-browser/commentThreadWidget.ts b/src/vs/workbench/contrib/comments/electron-browser/commentThreadWidget.ts
index 7cd60f65537..1a8c61cf255 100644
--- a/src/vs/workbench/contrib/comments/electron-browser/commentThreadWidget.ts
+++ b/src/vs/workbench/contrib/comments/electron-browser/commentThreadWidget.ts
@@ -709,12 +709,18 @@ export class ReviewZoneWidget extends ZoneWidget {
 	}
 
 	private createThreadLabel() {
-		let label: string;
-		if (this._commentThread.comments.length) {
-			const participantsList = this._commentThread.comments.filter(arrays.uniqueFilter(comment => comment.userName)).map(comment => `@${comment.userName}`).join(', ');
-			label = nls.localize('commentThreadParticipants', "Participants: {0}", participantsList);
-		} else {
-			label = nls.localize('startThread', "Start discussion");
+		let label: string | undefined;
+		if ((this._commentThread as modes.CommentThread2).commentThreadHandle !== undefined) {
+			label = (this._commentThread as modes.CommentThread2).label;
+		}
+
+		if (label === undefined) {
+			if (this._commentThread.comments.length) {
+				const participantsList = this._commentThread.comments.filter(arrays.uniqueFilter(comment => comment.userName)).map(comment => `@${comment.userName}`).join(', ');
+				label = nls.localize('commentThreadParticipants', "Participants: {0}", participantsList);
+			} else {
+				label = nls.localize('startThread', "Start discussion");
+			}
 		}
 
 		this._headingLabel.innerHTML = strings.escape(label);