diff --git a/README.md b/README.md
index 354711c..a3c1cf1 100644
--- a/README.md
+++ b/README.md
@@ -396,6 +396,20 @@ class User extends Authenticatable implements Commenter, HasName, HasAvatar
 }
 ```
 
+If your users do not implement `HasAvatar`, Commentions will consult an avatar provider before falling back to `ui-avatars.com`. By default it uses the current Filament panel's default provider (set via `Panel::defaultAvatarProvider(...)`). To force a specific provider regardless of panel context, set the `avatar_provider` config key:
+
+```php
+// config/commentions.php
+use Filament\AvatarProviders\GravatarProvider;
+
+return [
+    // ...
+    'avatar_provider' => GravatarProvider::class,
+];
+```
+
+Any class exposing a `get(Model|Authenticatable $user): string` method works.
+
 ### Customizing TipTap Editor Styles
 
 You can customize the TipTap editor CSS classes used using the `Config` class.
diff --git a/config/commentions.php b/config/commentions.php
index 4267451..6a9a13a 100644
--- a/config/commentions.php
+++ b/config/commentions.php
@@ -46,6 +46,23 @@
         'allowed' => ['👍', '❤️', '😂', '😮', '😢', '🤔'],
     ],
 
+    /*
+    |--------------------------------------------------------------------------
+    | Avatar provider
+    |--------------------------------------------------------------------------
+    |
+    | Class name of a Filament-compatible avatar provider used to resolve a
+    | URL for the comment author when the user does not implement HasAvatar.
+    | Must expose a `get(Model|Authenticatable $user): string` method.
+    | Examples: Filament\AvatarProviders\UiAvatarsProvider,
+    | Filament\AvatarProviders\GravatarProvider.
+    |
+    | When null, Commentions falls back to the active Filament panel's
+    | default avatar provider (if any), and finally to ui-avatars.com.
+    |
+    */
+    'avatar_provider' => null,
+
     /*
     |--------------------------------------------------------------------------
     | Subscriptions
diff --git a/src/Comment.php b/src/Comment.php
index 91eca58..abab6b0 100644
--- a/src/Comment.php
+++ b/src/Comment.php
@@ -6,6 +6,7 @@
 use Carbon\CarbonInterface;
 use Closure;
 use DateTime;
+use Filament\Facades\Filament;
 use Filament\Models\Contracts\HasAvatar;
 use Illuminate\Database\Eloquent\Casts\Attribute;
 use Illuminate\Database\Eloquent\Factories\HasFactory;
@@ -121,14 +122,18 @@ public function getAuthorName(): string
 
     public function getAuthorAvatar(): string
     {
-        $avatar = null;
-
         if ($this->author instanceof HasAvatar) {
             $avatar = $this->author->getFilamentAvatarUrl();
+
+            if (! is_null($avatar)) {
+                return $avatar;
+            }
         }
 
-        if (! is_null($avatar)) {
-            return $avatar;
+        $providerAvatar = $this->resolveAvatarFromProvider();
+
+        if (! is_null($providerAvatar)) {
+            return $providerAvatar;
         }
 
         $name = str(Manager::getName($this->author))
@@ -183,6 +188,31 @@ public function getContentHash(): string
         ]));
     }
 
+    protected function resolveAvatarFromProvider(): ?string
+    {
+        $providerClass = Config::getAvatarProvider();
+
+        if ($providerClass === null) {
+            try {
+                if (Filament::getCurrentPanel() !== null) {
+                    $providerClass = Filament::getDefaultAvatarProvider();
+                }
+            } catch (\Throwable) {
+                return null;
+            }
+        }
+
+        if ($providerClass === null) {
+            return null;
+        }
+
+        try {
+            return app($providerClass)->get($this->author);
+        } catch (\Throwable) {
+            return null;
+        }
+    }
+
     protected static function newFactory()
     {
         return CommentFactory::new();
diff --git a/src/Config.php b/src/Config.php
index 052a2e2..336d169 100644
--- a/src/Config.php
+++ b/src/Config.php
@@ -82,6 +82,11 @@ public static function getAllowedReactions(): array
         return config('commentions.reactions.allowed', ['👍']);
     }
 
+    public static function getAvatarProvider(): ?string
+    {
+        return config('commentions.avatar_provider');
+    }
+
     public static function resolveTipTapCssClassesUsing(Closure $callback): void
     {
         static::$resolveTipTapCssClasses = $callback;
diff --git a/tests/AvatarProviderTest.php b/tests/AvatarProviderTest.php
new file mode 100644
index 0000000..9bf86db
--- /dev/null
+++ b/tests/AvatarProviderTest.php
@@ -0,0 +1,28 @@
+<?php
+
+use Kirschbaum\Commentions\Comment as CommentModel;
+use Tests\Models\Post;
+use Tests\Models\StubAvatarProvider;
+use Tests\Models\User;
+
+test('falls back to ui-avatars when no provider is configured', function () {
+    config()->set('commentions.avatar_provider', null);
+
+    $user = User::factory()->create(['name' => 'Jane Doe']);
+    $post = Post::factory()->create();
+    $comment = CommentModel::factory()->author($user)->commentable($post)->create();
+
+    expect($comment->getAuthorAvatar())
+        ->toStartWith('https://ui-avatars.com/api/?');
+});
+
+test('uses configured avatar provider when set', function () {
+    config()->set('commentions.avatar_provider', StubAvatarProvider::class);
+
+    $user = User::factory()->create(['name' => 'Jane Doe']);
+    $post = Post::factory()->create();
+    $comment = CommentModel::factory()->author($user)->commentable($post)->create();
+
+    expect($comment->getAuthorAvatar())
+        ->toBe('https://stub.test/avatar/Jane+Doe');
+});
diff --git a/tests/Models/StubAvatarProvider.php b/tests/Models/StubAvatarProvider.php
new file mode 100644
index 0000000..7a13da3
--- /dev/null
+++ b/tests/Models/StubAvatarProvider.php
@@ -0,0 +1,14 @@
+<?php
+
+namespace Tests\Models;
+
+use Illuminate\Contracts\Auth\Authenticatable;
+use Illuminate\Database\Eloquent\Model;
+
+class StubAvatarProvider
+{
+    public function get(Model|Authenticatable $user): string
+    {
+        return 'https://stub.test/avatar/' . urlencode($user->name);
+    }
+}