diff --git a/Userland/Libraries/LibJS/Runtime/Realm.h b/Userland/Libraries/LibJS/Runtime/Realm.h
index ff492777380..2ea3728e30d 100644
--- a/Userland/Libraries/LibJS/Runtime/Realm.h
+++ b/Userland/Libraries/LibJS/Runtime/Realm.h
@@ -48,6 +48,8 @@ public:
     }
 
     HostDefined* host_defined() { return m_host_defined; }
+    HostDefined const* host_defined() const { return m_host_defined; }
+
     void set_host_defined(OwnPtr<HostDefined> host_defined) { m_host_defined = move(host_defined); }
 
     void define_builtin(Bytecode::Builtin builtin, NonnullGCPtr<NativeFunction> value)
diff --git a/Userland/Libraries/LibWeb/Bindings/HostDefined.h b/Userland/Libraries/LibWeb/Bindings/HostDefined.h
index 54f49ffe4ce..911df1b09c4 100644
--- a/Userland/Libraries/LibWeb/Bindings/HostDefined.h
+++ b/Userland/Libraries/LibWeb/Bindings/HostDefined.h
@@ -33,6 +33,11 @@ struct HostDefined : public JS::Realm::HostDefined {
     return *verify_cast<HostDefined>(realm.host_defined())->environment_settings_object;
 }
 
+[[nodiscard]] inline HTML::EnvironmentSettingsObject const& host_defined_environment_settings_object(JS::Realm const& realm)
+{
+    return *verify_cast<HostDefined>(realm.host_defined())->environment_settings_object;
+}
+
 [[nodiscard]] inline Page& host_defined_page(JS::Realm& realm)
 {
     return *verify_cast<HostDefined>(realm.host_defined())->page;
diff --git a/Userland/Libraries/LibWeb/HTML/Scripting/Environments.cpp b/Userland/Libraries/LibWeb/HTML/Scripting/Environments.cpp
index eebfc7678dc..6d38fffaa8c 100644
--- a/Userland/Libraries/LibWeb/HTML/Scripting/Environments.cpp
+++ b/Userland/Libraries/LibWeb/HTML/Scripting/Environments.cpp
@@ -65,6 +65,12 @@ JS::ExecutionContext& EnvironmentSettingsObject::realm_execution_context()
     return *m_realm_execution_context;
 }
 
+JS::ExecutionContext const& EnvironmentSettingsObject::realm_execution_context() const
+{
+    // NOTE: All environment settings objects are created with a realm execution context, so it's stored and returned here in the base class.
+    return *m_realm_execution_context;
+}
+
 ModuleMap& EnvironmentSettingsObject::module_map()
 {
     return *m_module_map;
@@ -124,6 +130,15 @@ void EnvironmentSettingsObject::prepare_to_run_script()
     // FIXME: 2. Add settings to the currently running task's script evaluation environment settings object set.
 }
 
+// https://whatpr.org/html/9893/b8ea975...df5706b/webappapis.html#concept-realm-execution-context
+JS::ExecutionContext const& execution_context_of_realm(JS::Realm const& realm)
+{
+    // FIXME: 1. If realm is a principal realm, then return the realm execution context of the environment settings object of realm.
+    // FIXME: 2. Assert: realm is a synthetic realm.
+    // FIXME: 3. Return the execution context of the synthetic realm settings object of realm.
+    return Bindings::host_defined_environment_settings_object(realm).realm_execution_context();
+}
+
 // https://html.spec.whatwg.org/multipage/webappapis.html#clean-up-after-running-script
 void EnvironmentSettingsObject::clean_up_after_running_script()
 {
diff --git a/Userland/Libraries/LibWeb/HTML/Scripting/Environments.h b/Userland/Libraries/LibWeb/HTML/Scripting/Environments.h
index 7723f0637e9..dfbbe9d97fe 100644
--- a/Userland/Libraries/LibWeb/HTML/Scripting/Environments.h
+++ b/Userland/Libraries/LibWeb/HTML/Scripting/Environments.h
@@ -63,6 +63,7 @@ public:
 
     // https://html.spec.whatwg.org/multipage/webappapis.html#concept-environment-target-browsing-context
     JS::ExecutionContext& realm_execution_context();
+    JS::ExecutionContext const& realm_execution_context() const;
 
     // https://html.spec.whatwg.org/multipage/webappapis.html#concept-settings-object-module-map
     ModuleMap& module_map();
@@ -135,6 +136,8 @@ private:
     bool m_discarded { false };
 };
 
+JS::ExecutionContext const& execution_context_of_realm(JS::Realm const&);
+
 RunScriptDecision can_run_script(JS::Realm const&);
 bool is_scripting_enabled(JS::Realm const&);
 bool is_scripting_disabled(JS::Realm const&);