diff --git a/moli-renderer-v8/src/native_bridge/element.rs b/moli-renderer-v8/src/native_bridge/element.rs
index fd8b134c16..36c55c55dd 100644
--- a/moli-renderer-v8/src/native_bridge/element.rs
+++ b/moli-renderer-v8/src/native_bridge/element.rs
@@ -441,8 +441,10 @@ pub(super) use global_attributes::{
     node_credentialless_getter_function, node_credentialless_setter_function,
     node_dir_getter_function, node_dir_setter_function, node_draggable_getter_function,
     node_draggable_setter_function, node_enter_key_hint_getter_function,
-    node_enter_key_hint_setter_function, node_hidden_getter_function, node_hidden_setter_function,
-    node_input_mode_getter_function, node_input_mode_setter_function,
+    node_enter_key_hint_setter_function, node_focus_group_getter_function,
+    node_focus_group_setter_function, node_focus_group_start_getter_function,
+    node_focus_group_start_setter_function, node_hidden_getter_function,
+    node_hidden_setter_function, node_input_mode_getter_function, node_input_mode_setter_function,
     node_is_content_editable_getter_function, node_lang_getter_function, node_lang_setter_function,
     node_sandbox_getter_function, node_sandbox_setter_function, node_spellcheck_getter_function,
     node_spellcheck_setter_function, node_tab_index_getter_function,
@@ -1560,6 +1562,20 @@ struct HtmlOrForeignElementPrototypeDeclaration {
         setter = node_nonce_setter_function
     )]
     nonce: (),
+    #[webapi(
+        accessor_property = "focusGroup",
+        enumerable,
+        getter = node_focus_group_getter_function,
+        setter = node_focus_group_setter_function
+    )]
+    focus_group: (),
+    #[webapi(
+        accessor_property = "focusGroupStart",
+        enumerable,
+        getter = node_focus_group_start_getter_function,
+        setter = node_focus_group_start_setter_function
+    )]
+    focus_group_start: (),
     #[webapi(
         accessor_property,
         enumerable,
diff --git a/moli-renderer-v8/src/native_bridge/element/global_attributes.rs b/moli-renderer-v8/src/native_bridge/element/global_attributes.rs
index b22b1dac48..fa2430f7bf 100644
--- a/moli-renderer-v8/src/native_bridge/element/global_attributes.rs
+++ b/moli-renderer-v8/src/native_bridge/element/global_attributes.rs
@@ -2216,6 +2216,57 @@ pub(in crate::native_bridge) fn node_autofocus_getter_function<'s>(
     boolean_attribute_property_getter_from_object_or_detached(scope, args.this(), "autofocus", rv);
 }
 
+pub(in crate::native_bridge) fn node_focus_group_getter_function<'s>(
+    scope: &mut v8::PinScope<'s, '_>,
+    args: v8::FunctionCallbackArguments<'s>,
+    rv: v8::ReturnValue<'s, v8::Value>,
+) {
+    attribute_property_getter_from_object_or_detached(scope, args.this(), "focusgroup", rv);
+}
+
+pub(in crate::native_bridge) fn node_focus_group_setter_function<'s>(
+    scope: &mut v8::PinScope<'s, '_>,
+    args: v8::FunctionCallbackArguments<'s>,
+    mut rv: v8::ReturnValue<'s, v8::Value>,
+) {
+    set_dom_string_attribute_property_on_object(
+        scope,
+        args.this(),
+        "focusgroup",
+        args.get(0),
+        "HTMLOrSVGOrMathMLElement",
+        "focusGroup",
+    );
+    rv.set_undefined();
+}
+
+pub(in crate::native_bridge) fn node_focus_group_start_getter_function<'s>(
+    scope: &mut v8::PinScope<'s, '_>,
+    args: v8::FunctionCallbackArguments<'s>,
+    rv: v8::ReturnValue<'s, v8::Value>,
+) {
+    boolean_attribute_property_getter_from_object_or_detached(
+        scope,
+        args.this(),
+        "focusgroupstart",
+        rv,
+    );
+}
+
+pub(in crate::native_bridge) fn node_focus_group_start_setter_function<'s>(
+    scope: &mut v8::PinScope<'s, '_>,
+    args: v8::FunctionCallbackArguments<'s>,
+    mut rv: v8::ReturnValue<'s, v8::Value>,
+) {
+    set_boolean_attribute_property_on_object_or_detached(
+        scope,
+        args.this(),
+        "focusgroupstart",
+        args.get(0),
+    );
+    rv.set_undefined();
+}
+
 pub(in crate::native_bridge) fn node_autofocus_setter_function<'s>(
     scope: &mut v8::PinScope<'s, '_>,
     args: v8::FunctionCallbackArguments<'s>,
diff --git a/moli-renderer-v8/src/script_vm/tests/dom_elements/live_document.rs b/moli-renderer-v8/src/script_vm/tests/dom_elements/live_document.rs
index e996e45a0c..546ec9f42e 100644
--- a/moli-renderer-v8/src/script_vm/tests/dom_elements/live_document.rs
+++ b/moli-renderer-v8/src/script_vm/tests/dom_elements/live_document.rs
@@ -733,7 +733,7 @@ fn htmlelement_standard_accessors_live_on_owner_prototypes() {
                 assert(!own(HTMLDivElement.prototype, name), `${name} duplicated on HTMLDivElement.prototype`);
               }
 
-              const mixinNames = ["autofocus", "tabIndex"];
+              const mixinNames = ["focusGroup", "focusGroupStart", "autofocus", "tabIndex"];
               for (const prototype of [HTMLElement.prototype, SVGElement.prototype, MathMLElement.prototype]) {
                 for (const name of mixinNames) {
                   accessor(prototype, name);
@@ -765,6 +765,8 @@ fn htmlelement_standard_accessors_live_on_owner_prototypes() {
               div.inputMode = "NUMERIC";
               div.innerText = "hello text";
               div.popover = "hint";
+              div.focusGroup = "toolbar";
+              div.focusGroupStart = true;
               div.autofocus = true;
               div.tabIndex = 5;
 
@@ -783,7 +785,15 @@ fn htmlelement_standard_accessors_live_on_owner_prototypes() {
               assert(div.inputMode === "numeric", "inputMode behavior");
               assert(div.innerText === "hello text" && div.outerText === "hello text", "innerText/outerText behavior");
               assert(div.popover === "hint", "popover behavior");
-              assert(div.autofocus === true && div.tabIndex === 5, "HTMLOrForeignElement behavior");
+              assert(
+                div.focusGroup === "toolbar" &&
+                  div.getAttribute("focusgroup") === "toolbar" &&
+                  div.focusGroupStart === true &&
+                  div.hasAttribute("focusgroupstart") &&
+                  div.autofocus === true &&
+                  div.tabIndex === 5,
+                "HTMLOrSVGOrMathMLElement behavior"
+              );
 
               const holder = document.createElement("section");
               const para = document.createElement("p");
@@ -794,8 +804,18 @@ fn htmlelement_standard_accessors_live_on_owner_prototypes() {
 
               svg.tabIndex = 9;
               svg.autofocus = true;
+              svg.focusGroup = "grid";
+              svg.focusGroupStart = true;
               assert(svg.tabIndex === 9 && svg.getAttribute("tabindex") === "9", "svg tabIndex behavior");
               assert(svg.autofocus === true && svg.hasAttribute("autofocus"), "svg autofocus behavior");
+              assert(svg.focusGroup === "grid" && svg.focusGroupStart === true, "svg focusgroup behavior");
+              const math = document.createElementNS("http://www.w3.org/1998/Math/MathML", "math");
+              math.focusGroup = "tablist inline";
+              math.focusGroupStart = true;
+              assert(
+                math.focusGroup === "tablist inline" && math.focusGroupStart === true,
+                "MathML focusgroup behavior"
+              );
               return "ok";
             })()
             "#,