diff --git a/dom/quota/ActorsChild.cpp b/dom/quota/ActorsChild.cpp
index fce98f8bce63..bbac274b8f5a 100644
--- a/dom/quota/ActorsChild.cpp
+++ b/dom/quota/ActorsChild.cpp
@@ -255,6 +255,16 @@ void QuotaRequestChild::HandleResponse(bool aResponse) {
   mRequest->SetResult(variant);
 }
 
+void QuotaRequestChild::HandleResponse(const nsAString& aResponse) {
+  AssertIsOnOwningThread();
+  MOZ_ASSERT(mRequest);
+
+  RefPtr<nsVariant> variant = new nsVariant();
+  variant->SetAsAString(aResponse);
+
+  mRequest->SetResult(variant);
+}
+
 void QuotaRequestChild::HandleResponse(const EstimateResponse& aResponse) {
   AssertIsOnOwningThread();
   MOZ_ASSERT(mRequest);
@@ -304,6 +314,10 @@ mozilla::ipc::IPCResult QuotaRequestChild::Recv__delete__(
       HandleResponse(aResponse.get_nsresult());
       break;
 
+    case RequestResponse::TStorageNameResponse:
+      HandleResponse(aResponse.get_StorageNameResponse().name());
+      break;
+
     case RequestResponse::TStorageInitializedResponse:
       HandleResponse(aResponse.get_StorageInitializedResponse().initialized());
       break;
diff --git a/dom/quota/ActorsChild.h b/dom/quota/ActorsChild.h
index e1e3a7dc740c..ca24120b565e 100644
--- a/dom/quota/ActorsChild.h
+++ b/dom/quota/ActorsChild.h
@@ -129,6 +129,8 @@ class QuotaRequestChild final : public PQuotaRequestChild {
 
   void HandleResponse(bool aResponse);
 
+  void HandleResponse(const nsAString& aResponse);
+
   void HandleResponse(const EstimateResponse& aResponse);
 
   void HandleResponse(const nsTArray<nsCString>& aResponse);
diff --git a/dom/quota/ActorsParent.cpp b/dom/quota/ActorsParent.cpp
index ac86a8376d80..fde7f1002fa8 100644
--- a/dom/quota/ActorsParent.cpp
+++ b/dom/quota/ActorsParent.cpp
@@ -1490,6 +1490,22 @@ class QuotaRequestBase : public NormalOriginOperationBase,
   virtual void ActorDestroy(ActorDestroyReason aWhy) override;
 };
 
+class StorageNameOp final : public QuotaRequestBase {
+  nsString mName;
+
+ public:
+  StorageNameOp();
+
+  void Init(Quota* aQuota) override;
+
+ private:
+  ~StorageNameOp() = default;
+
+  nsresult DoDirectoryWork(QuotaManager* aQuotaManager) override;
+
+  void GetResponse(RequestResponse& aResponse) override;
+};
+
 class InitializedRequestBase : public QuotaRequestBase {
  protected:
   bool mInitialized;
@@ -8608,6 +8624,7 @@ bool Quota::VerifyRequestParams(const RequestParams& aParams) const {
   MOZ_ASSERT(aParams.type() != RequestParams::T__None);
 
   switch (aParams.type()) {
+    case RequestParams::TStorageNameParams:
     case RequestParams::TStorageInitializedParams:
     case RequestParams::TTemporaryStorageInitializedParams:
     case RequestParams::TInitParams:
@@ -8851,6 +8868,10 @@ PQuotaRequestParent* Quota::AllocPQuotaRequestParent(
   RefPtr<QuotaRequestBase> actor;
 
   switch (aParams.type()) {
+    case RequestParams::TStorageNameParams:
+      actor = new StorageNameOp();
+      break;
+
     case RequestParams::TStorageInitializedParams:
       actor = new StorageInitializedOp();
       break;
@@ -9483,6 +9504,43 @@ void QuotaRequestBase::ActorDestroy(ActorDestroyReason aWhy) {
   NoteActorDestroyed();
 }
 
+StorageNameOp::StorageNameOp() : QuotaRequestBase(/* aExclusive */ false) {
+  AssertIsOnOwningThread();
+
+  // Overwrite NormalOriginOperationBase default values.
+  mNeedsDirectoryLocking = false;
+
+  // Overwrite OriginOperationBase default values.
+  mNeedsQuotaManagerInit = true;
+  mNeedsStorageInit = false;
+}
+
+void StorageNameOp::Init(Quota* aQuota) {
+  AssertIsOnOwningThread();
+  MOZ_ASSERT(aQuota);
+}
+
+nsresult StorageNameOp::DoDirectoryWork(QuotaManager* aQuotaManager) {
+  AssertIsOnIOThread();
+  MOZ_ASSERT(aQuotaManager);
+
+  AUTO_PROFILER_LABEL("StorageNameOp::DoDirectoryWork", OTHER);
+
+  mName = aQuotaManager->GetStorageName();
+
+  return NS_OK;
+}
+
+void StorageNameOp::GetResponse(RequestResponse& aResponse) {
+  AssertIsOnOwningThread();
+
+  StorageNameResponse storageNameResponse;
+
+  storageNameResponse.name() = mName;
+
+  aResponse = storageNameResponse;
+}
+
 InitializedRequestBase::InitializedRequestBase()
     : QuotaRequestBase(/* aExclusive */ false), mInitialized(false) {
   AssertIsOnOwningThread();
diff --git a/dom/quota/PQuota.ipdl b/dom/quota/PQuota.ipdl
index 598c3d34b6c0..47681b8ca193 100644
--- a/dom/quota/PQuota.ipdl
+++ b/dom/quota/PQuota.ipdl
@@ -26,6 +26,10 @@ namespace mozilla {
 namespace dom {
 namespace quota {
 
+struct StorageNameParams
+{
+};
+
 struct StorageInitializedParams
 {
 };
@@ -121,6 +125,7 @@ struct ListOriginsParams
 
 union RequestParams
 {
+  StorageNameParams;
   StorageInitializedParams;
   TemporaryStorageInitializedParams;
   InitParams;
diff --git a/dom/quota/PQuotaRequest.ipdl b/dom/quota/PQuotaRequest.ipdl
index a97d9510db05..0d30b3a662c6 100644
--- a/dom/quota/PQuotaRequest.ipdl
+++ b/dom/quota/PQuotaRequest.ipdl
@@ -8,6 +8,11 @@ namespace mozilla {
 namespace dom {
 namespace quota {
 
+struct StorageNameResponse
+{
+  nsString name;
+};
+
 struct StorageInitializedResponse
 {
   bool initialized;
@@ -74,6 +79,7 @@ struct ListOriginsResponse
 union RequestResponse
 {
   nsresult;
+  StorageNameResponse;
   StorageInitializedResponse;
   TemporaryStorageInitializedResponse;
   InitResponse;
diff --git a/dom/quota/QuotaManagerService.cpp b/dom/quota/QuotaManagerService.cpp
index d9a9ea4ef1dc..34febbc0ce2e 100644
--- a/dom/quota/QuotaManagerService.cpp
+++ b/dom/quota/QuotaManagerService.cpp
@@ -382,6 +382,30 @@ NS_IMPL_RELEASE_WITH_DESTROY(QuotaManagerService, Destroy())
 NS_IMPL_QUERY_INTERFACE(QuotaManagerService, nsIQuotaManagerService,
                         nsIObserver)
 
+NS_IMETHODIMP
+QuotaManagerService::StorageName(nsIQuotaRequest** _retval) {
+  MOZ_ASSERT(NS_IsMainThread());
+  MOZ_ASSERT(nsContentUtils::IsCallerChrome());
+
+  if (NS_WARN_IF(!StaticPrefs::dom_quotaManager_testing())) {
+    return NS_ERROR_UNEXPECTED;
+  }
+
+  RefPtr<Request> request = new Request();
+
+  StorageNameParams params;
+
+  RequestInfo info(request, params);
+
+  nsresult rv = InitiateRequest(info);
+  if (NS_WARN_IF(NS_FAILED(rv))) {
+    return rv;
+  }
+
+  request.forget(_retval);
+  return NS_OK;
+}
+
 NS_IMETHODIMP
 QuotaManagerService::StorageInitialized(nsIQuotaRequest** _retval) {
   MOZ_ASSERT(NS_IsMainThread());
diff --git a/dom/quota/nsIQuotaManagerService.idl b/dom/quota/nsIQuotaManagerService.idl
index ea02f899a3b1..357239e27d79 100644
--- a/dom/quota/nsIQuotaManagerService.idl
+++ b/dom/quota/nsIQuotaManagerService.idl
@@ -15,6 +15,15 @@ interface nsIQuotaUsageRequest;
 [scriptable, builtinclass, uuid(1b3d0a38-8151-4cf9-89fa-4f92c2ef0e7e)]
 interface nsIQuotaManagerService : nsISupports
 {
+  /**
+   * Asynchronously retrieves storage name and returns it as a plain string.
+   *
+   * If the dom.quotaManager.testing preference is not true the call will be
+   * a no-op.
+   */
+  [must_use] nsIQuotaRequest
+  storageName();
+
   /**
    * Check if storage is initialized.
    *