diff --git a/components/script/dom/domstringmap.rs b/components/script/dom/domstringmap.rs
new file mode 100644
index 00000000000..ba0031e1098
--- /dev/null
+++ b/components/script/dom/domstringmap.rs
@@ -0,0 +1,62 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+use dom::bindings::cell::DOMRefCell;
+use dom::bindings::codegen::Bindings::DOMStringMapBinding;
+use dom::bindings::codegen::Bindings::DOMStringMapBinding::DOMStringMapMethods;
+use dom::bindings::global::GlobalRef;
+use dom::bindings::js::{JSRef, Temporary};
+use dom::bindings::utils::{Reflectable, Reflector, reflect_dom_object};
+use servo_util::str::DOMString;
+
+use std::collections::hashmap::HashMap;
+
+#[dom_struct]
+pub struct DOMStringMap {
+    map: DOMRefCell<HashMap<DOMString, DOMString>>,
+    reflector_: Reflector,
+}
+
+impl DOMStringMap {
+    fn new_inherited() -> DOMStringMap {
+        DOMStringMap {
+            map: DOMRefCell::new(HashMap::new()),
+            reflector_: Reflector::new(),
+        }
+    }
+
+    pub fn new(global: &GlobalRef) -> Temporary<DOMStringMap> {
+        reflect_dom_object(box DOMStringMap::new_inherited(),
+                           global, DOMStringMapBinding::Wrap)
+    }
+}
+
+impl<'a> DOMStringMapMethods for JSRef<'a, DOMStringMap> {
+    fn NamedCreator(self, name: DOMString, value: DOMString) {
+        self.map.borrow_mut().insert(name, value);
+    }
+
+    fn NamedSetter(self, name: DOMString, value: DOMString) {
+        self.map.borrow_mut().insert(name, value);
+    }
+
+    fn NamedGetter(self, name: DOMString, found: &mut bool) -> DOMString {
+        match self.map.borrow().find(&name) {
+            Some(value) => {
+                *found = true;
+                value.clone()
+            },
+            None => {
+                *found = false;
+                String::new()
+            }
+        }
+    }
+}
+
+impl Reflectable for DOMStringMap {
+    fn reflector<'a>(&'a self) -> &'a Reflector {
+        &self.reflector_
+    }
+}
diff --git a/components/script/dom/webidls/DOMStringMap.webidl b/components/script/dom/webidls/DOMStringMap.webidl
new file mode 100644
index 00000000000..7ae0a1b9278
--- /dev/null
+++ b/components/script/dom/webidls/DOMStringMap.webidl
@@ -0,0 +1,12 @@
+/* -*- Mode: IDL; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+// https://html.spec.whatwg.org/#the-domstringmap-interface
+[OverrideBuiltins]
+interface DOMStringMap {
+  getter DOMString (DOMString name);
+  setter creator void (DOMString name, DOMString value);
+  //deleter void (DOMString name);
+};
diff --git a/components/script/lib.rs b/components/script/lib.rs
index e93ddd9dc29..64fd584c757 100644
--- a/components/script/lib.rs
+++ b/components/script/lib.rs
@@ -89,6 +89,7 @@ pub mod dom {
     pub mod characterdata;
     pub mod domrect;
     pub mod domrectlist;
+    pub mod domstringmap;
     pub mod comment;
     pub mod console;
     mod create;
diff --git a/tests/content/test_interfaces.html b/tests/content/test_interfaces.html
index 825356e7d39..5d544ebeaca 100644
--- a/tests/content/test_interfaces.html
+++ b/tests/content/test_interfaces.html
@@ -67,6 +67,7 @@ var interfaceNamesInGlobalScope = [
   "DOMImplementation",
   "DOMParser",
   "DOMTokenList",
+  "DOMStringMap",
   "Element",
   "Event",
   "EventTarget",
diff --git a/tests/wpt/metadata/html/dom/interfaces.html.ini b/tests/wpt/metadata/html/dom/interfaces.html.ini
index a2367497351..ab044ab945f 100644
--- a/tests/wpt/metadata/html/dom/interfaces.html.ini
+++ b/tests/wpt/metadata/html/dom/interfaces.html.ini
@@ -1692,18 +1692,9 @@
   [PropertyNodeList interface: operation getValues()]
     expected: FAIL
 
-  [DOMStringMap interface: existence and properties of interface object]
-    expected: FAIL
-
   [DOMStringMap interface object length]
     expected: FAIL
 
-  [DOMStringMap interface: existence and properties of interface prototype object]
-    expected: FAIL
-
-  [DOMStringMap interface: existence and properties of interface prototype object\'s "constructor" property]
-    expected: FAIL
-
   [DOMStringMap must be primary interface of document.head.dataset]
     expected: FAIL