diff --git a/lang/en/messages.php b/lang/en/messages.php
index 5899880f2c1..c1663902873 100644
--- a/lang/en/messages.php
+++ b/lang/en/messages.php
@@ -94,6 +94,7 @@
     'field_conditions_instructions' => 'When to show or hide this field.',
     'field_desynced_from_origin' => 'Desynced from origin. Click to sync and revert to the origin\'s value.',
     'field_synced_with_origin' => 'Synced with origin. Click or edit the field to desync.',
+    'localization_fully_synced_with_origin' => 'All fields synced with origin.',
     'field_validation_advanced_instructions' => 'Add more advanced validation to this field.',
     'field_validation_required_instructions' => 'Make this field required or optional.',
     'field_validation_sometimes_instructions' => 'Only validate when this field is visible or submitted.',
diff --git a/resources/js/components/SiteSelector.vue b/resources/js/components/SiteSelector.vue
index b3107763568..777893cff28 100644
--- a/resources/js/components/SiteSelector.vue
+++ b/resources/js/components/SiteSelector.vue
@@ -1,6 +1,6 @@
 <script setup>
 import { computed } from 'vue';
-import { Icon, Select, Subheading } from '@/components/ui';
+import { Badge, Icon, Select, Subheading } from '@/components/ui';
 import {
     flatOptionsFromSiteGroups,
     groupItemsBySiteGroup,
@@ -49,6 +49,31 @@ function groupLabel(option) {
                     <Icon name="chevron-right" class="size-3.5! shrink-0 text-gray-700 dark:text-white/70" aria-hidden="true" />
                 </template>
                 <span class="truncate">{{ __(option.name) }}</span>
+                <span
+                    v-if="option.fully_synced === true"
+                    class="inline-flex shrink-0 ps-0.5"
+                    v-tooltip="__('messages.localization_fully_synced_with_origin')"
+                >
+                    <Icon name="synced" class="size-3.5! text-gray-400 dark:text-gray-600" />
+                </span>
+            </span>
+        </template>
+
+        <template #option="option">
+            <span class="flex min-w-0 flex-1 items-center gap-x-2">
+                <span class="flex min-w-0 items-center gap-1.5">
+                    <span class="truncate">{{ __(option.name) }}</span>
+                    <span
+                        v-if="option.fully_synced === true"
+                        class="inline-flex shrink-0"
+                        v-tooltip="__('messages.localization_fully_synced_with_origin')"
+                    >
+                        <Icon name="synced" class="size-3.5! text-gray-400 dark:text-gray-600" />
+                    </span>
+                </span>
+                <Badge size="sm" color="orange" v-if="option.origin === true" :text="__('Origin')" />
+                <Badge size="sm" color="blue" v-if="option.active === true" :text="__('Active')" />
+                <Badge size="sm" color="purple" v-if="option.root === true && option.origin !== true && option.active !== true" :text="__('Root')" />
             </span>
         </template>
 
diff --git a/resources/js/components/globals/PublishForm.vue b/resources/js/components/globals/PublishForm.vue
index 53daa7dab3c..e2c9435ea0d 100644
--- a/resources/js/components/globals/PublishForm.vue
+++ b/resources/js/components/globals/PublishForm.vue
@@ -233,9 +233,33 @@ export default {
         saving(saving) {
             this.$progress.loading(`${this.publishContainer}-global-publish-form`, saving);
         },
+
+        localizedFields: {
+            handler() {
+                this.refreshActiveLocalizationSyncState();
+            },
+            deep: true,
+        },
+
+        hasOrigin() {
+            this.refreshActiveLocalizationSyncState();
+        },
     },
 
     methods: {
+        refreshActiveLocalizationSyncState() {
+            this.localizations = this.localizations.map((localization) => {
+                if (localization.handle !== this.site) {
+                    return localization;
+                }
+
+                return {
+                    ...localization,
+                    fully_synced: this.hasOrigin && this.localizedFields.length === 0,
+                };
+            });
+        },
+
         save() {
             if (!this.canSave) return;
 
@@ -262,6 +286,7 @@ export default {
                 .then((response) => {
                     if (!this.isCreating) this.$toast.success(__('Saved'));
 
+                    this.refreshActiveLocalizationSyncState();
                     this.$nextTick(() => this.$emit('saved', response));
                 })
                 .catch((e) => {
diff --git a/src/Http/Controllers/CP/Globals/GlobalVariablesController.php b/src/Http/Controllers/CP/Globals/GlobalVariablesController.php
index 5aa4cf5b961..66f80415af5 100644
--- a/src/Http/Controllers/CP/Globals/GlobalVariablesController.php
+++ b/src/Http/Controllers/CP/Globals/GlobalVariablesController.php
@@ -63,7 +63,9 @@ public function edit(Request $request, $id)
                     'group' => $site->group(),
                     'group_handle' => $site->groupHandle(),
                     'active' => $localized->locale() === $variables->locale(),
-                    'origin' => ! $localized->hasOrigin(),
+                    'root' => $localized->isRoot(),
+                    'origin' => optional($variables->origin())->locale() === $localized->locale(),
+                    'fully_synced' => $localized->hasOrigin() && $localized->data()->isEmpty(),
                     'url' => $localized->editUrl(),
                 ];
             })->values()->all(),
@@ -137,9 +139,12 @@ protected function extractFromFields($set, $blueprint)
 
     protected function getAuthorizedLocalizationsForVariables($variables)
     {
-        return $variables
-            ->globalSet()
-            ->localizations()
-            ->filter(fn ($set) => User::current()->can('edit', $set));
+        $localizations = $variables->globalSet()->localizations();
+
+        return Site::all()
+            ->map(fn ($site) => $localizations->get($site->handle()))
+            ->filter()
+            ->filter(fn ($set) => User::current()->can('edit', $set))
+            ->values();
     }
 }
diff --git a/tests/Feature/Globals/EditGlobalVariablesTest.php b/tests/Feature/Globals/EditGlobalVariablesTest.php
index 9520c95e551..48ad1d73093 100644
--- a/tests/Feature/Globals/EditGlobalVariablesTest.php
+++ b/tests/Feature/Globals/EditGlobalVariablesTest.php
@@ -111,6 +111,185 @@ public function it_shows_the_form_even_if_localization_does_not_exist()
             );
     }
 
+    #[Test]
+    public function it_marks_localizations_as_fully_synced_when_they_have_no_localized_data()
+    {
+        $this->setSites([
+            'en' => ['name' => 'English', 'locale' => 'en_US', 'url' => 'http://test.com/'],
+            'fr' => ['name' => 'French', 'locale' => 'fr_FR', 'url' => 'http://fr.test.com/'],
+        ]);
+
+        $blueprint = Blueprint::make()->setContents(['fields' => [
+            ['handle' => 'foo', 'field' => ['type' => 'text']],
+        ]]);
+        Blueprint::partialMock();
+        Blueprint::shouldReceive('find')->with('globals.test')->andReturn($blueprint);
+
+        $this->setTestRoles(['test' => [
+            'access cp',
+            'edit test globals',
+            'access en site',
+            'access fr site',
+        ]]);
+        $user = User::make()->assignRole('test')->save();
+
+        $global = GlobalSet::make('test')->sites(['en', 'fr' => 'en'])->save();
+        $global->in('en')->data(['foo' => 'bar'])->save();
+        $global->in('fr')->data(['foo' => 'baz'])->save();
+
+        $this
+            ->actingAs($user)
+            ->get($global->in('en')->editUrl())
+            ->assertSuccessful()
+            ->assertInertia(fn (Assert $page) => $page
+                ->component('globals/Edit')
+                ->where('localizations.0.handle', 'en')
+                ->where('localizations.0.active', true)
+                ->where('localizations.0.root', true)
+                ->where('localizations.0.origin', false)
+                ->where('localizations.0.fully_synced', false)
+                ->where('localizations.1.handle', 'fr')
+                ->where('localizations.1.active', false)
+                ->where('localizations.1.root', false)
+                ->where('localizations.1.origin', false)
+                ->where('localizations.1.fully_synced', false)
+            );
+
+        $this
+            ->actingAs($user)
+            ->get($global->in('fr')->editUrl())
+            ->assertSuccessful()
+            ->assertInertia(fn (Assert $page) => $page
+                ->component('globals/Edit')
+                ->where('localizations.0.handle', 'en')
+                ->where('localizations.0.active', false)
+                ->where('localizations.0.root', true)
+                ->where('localizations.0.origin', true)
+                ->where('localizations.1.handle', 'fr')
+                ->where('localizations.1.active', true)
+                ->where('localizations.1.root', false)
+                ->where('localizations.1.origin', false)
+                ->where('localizations.1.fully_synced', false)
+            );
+
+        $global->in('fr')->data([])->save();
+
+        $this
+            ->actingAs($user)
+            ->get($global->in('en')->editUrl())
+            ->assertSuccessful()
+            ->assertInertia(fn (Assert $page) => $page
+                ->component('globals/Edit')
+                ->where('localizations.0.handle', 'en')
+                ->where('localizations.0.fully_synced', false)
+                ->where('localizations.1.handle', 'fr')
+                ->where('localizations.1.fully_synced', true)
+            );
+
+        // Matching origin values still counts as unsynced once data is stored locally.
+        $global->in('fr')->data(['foo' => 'bar'])->save();
+
+        $this
+            ->actingAs($user)
+            ->get($global->in('en')->editUrl())
+            ->assertSuccessful()
+            ->assertInertia(fn (Assert $page) => $page
+                ->component('globals/Edit')
+                ->where('localizations.1.handle', 'fr')
+                ->where('localizations.1.fully_synced', false)
+            );
+    }
+
+    #[Test]
+    public function it_marks_root_when_the_origin_is_not_the_root()
+    {
+        $this->setSites([
+            'en' => ['name' => 'English', 'locale' => 'en_US', 'url' => 'http://test.com/'],
+            'fr' => ['name' => 'French', 'locale' => 'fr_FR', 'url' => 'http://fr.test.com/'],
+            'de' => ['name' => 'German', 'locale' => 'de_DE', 'url' => 'http://de.test.com/'],
+        ]);
+
+        $blueprint = Blueprint::make()->setContents(['fields' => [
+            ['handle' => 'foo', 'field' => ['type' => 'text']],
+        ]]);
+        Blueprint::partialMock();
+        Blueprint::shouldReceive('find')->with('globals.test')->andReturn($blueprint);
+
+        $this->setTestRoles(['test' => [
+            'access cp',
+            'edit test globals',
+            'access en site',
+            'access fr site',
+            'access de site',
+        ]]);
+        $user = User::make()->assignRole('test')->save();
+
+        $global = GlobalSet::make('test')->sites(['en', 'fr' => 'en', 'de' => 'fr'])->save();
+        $global->in('en')->data(['foo' => 'bar'])->save();
+        $global->in('fr')->data([])->save();
+        $global->in('de')->data([])->save();
+
+        $this
+            ->actingAs($user)
+            ->get($global->in('de')->editUrl())
+            ->assertSuccessful()
+            ->assertInertia(fn (Assert $page) => $page
+                ->component('globals/Edit')
+                ->where('localizations.0.handle', 'en')
+                ->where('localizations.0.root', true)
+                ->where('localizations.0.origin', false)
+                ->where('localizations.0.active', false)
+                ->where('localizations.1.handle', 'fr')
+                ->where('localizations.1.root', false)
+                ->where('localizations.1.origin', true)
+                ->where('localizations.1.active', false)
+                ->where('localizations.2.handle', 'de')
+                ->where('localizations.2.root', false)
+                ->where('localizations.2.origin', false)
+                ->where('localizations.2.active', true)
+            );
+    }
+
+    #[Test]
+    public function it_orders_localizations_by_configured_site_order()
+    {
+        $this->setSites([
+            'fr' => ['name' => 'French', 'locale' => 'fr_FR', 'url' => 'http://fr.test.com/', 'group' => 'EU', 'group_handle' => 'eu'],
+            'en' => ['name' => 'English', 'locale' => 'en_US', 'url' => 'http://test.com/', 'group' => 'UK', 'group_handle' => 'uk'],
+        ]);
+
+        $blueprint = Blueprint::make()->setContents(['fields' => [
+            ['handle' => 'foo', 'field' => ['type' => 'text']],
+        ]]);
+        Blueprint::partialMock();
+        Blueprint::shouldReceive('find')->with('globals.test')->andReturn($blueprint);
+
+        $this->setTestRoles(['test' => [
+            'access cp',
+            'edit test globals',
+            'access en site',
+            'access fr site',
+        ]]);
+        $user = User::make()->assignRole('test')->save();
+
+        // Global set sites() keys start with en, but Site::all() starts with fr.
+        $global = GlobalSet::make('test')->sites(['en', 'fr' => 'en'])->save();
+        $global->in('en')->data(['foo' => 'bar'])->save();
+        $global->in('fr')->data([])->save();
+
+        $this
+            ->actingAs($user)
+            ->get($global->in('en')->editUrl())
+            ->assertSuccessful()
+            ->assertInertia(fn (Assert $page) => $page
+                ->component('globals/Edit')
+                ->where('localizations.0.handle', 'fr')
+                ->where('localizations.0.group', 'EU')
+                ->where('localizations.1.handle', 'en')
+                ->where('localizations.1.group', 'UK')
+            );
+    }
+
     #[Test]
     public function it_404s_if_invalid_site()
     {