diff --git a/src/Utopia/Messaging/Adapter/Push/OneSignal.php b/src/Utopia/Messaging/Adapter/Push/OneSignal.php
new file mode 100644
index 00000000..2b4330d0
--- /dev/null
+++ b/src/Utopia/Messaging/Adapter/Push/OneSignal.php
@@ -0,0 +1,119 @@
+<?php
+
+namespace Utopia\Messaging\Adapter\Push;
+
+use Utopia\Messaging\Adapter\Push as PushAdapter;
+use Utopia\Messaging\Messages\Push as PushMessage;
+use Utopia\Messaging\Priority;
+use Utopia\Messaging\Response;
+
+class OneSignal extends PushAdapter
+{
+    protected const NAME = 'OneSignal';
+
+    /**
+     * @param string $appId OneSignal App ID
+     * @param string $apiKey OneSignal REST API Key
+     */
+    public function __construct(
+        private string $appId,
+        private string $apiKey,
+    ) {
+        parent::__construct();
+    }
+
+    /**
+     * Get adapter name.
+     */
+    public function getName(): string
+    {
+        return static::NAME;
+    }
+
+    /**
+     * Get max messages per request.
+     */
+    public function getMaxMessagesPerRequest(): int
+    {
+        return 2000;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function process(PushMessage $message): array
+    {
+        $payload = [
+            'app_id' => $this->appId,
+            'include_player_ids' => $message->getTo(),
+        ];
+
+        if (!\is_null($message->getTitle())) {
+            $payload['headings'] = ['en' => $message->getTitle()];
+        }
+        if (!\is_null($message->getBody())) {
+            $payload['contents'] = ['en' => $message->getBody()];
+        }
+        if (!\is_null($message->getData())) {
+            $payload['data'] = $message->getData();
+        }
+        if (!\is_null($message->getAction())) {
+            $payload['url'] = $message->getAction();
+        }
+        if (!\is_null($message->getImage())) {
+            $payload['big_picture'] = $message->getImage();
+            $payload['ios_attachments'] = ['id' => $message->getImage()];
+        }
+        if (!\is_null($message->getIcon())) {
+            $payload['small_icon'] = $message->getIcon();
+        }
+        if (!\is_null($message->getColor())) {
+            $payload['android_accent_color'] = $message->getColor();
+        }
+        if (!\is_null($message->getTag())) {
+            $payload['android_group'] = $message->getTag();
+        }
+        if (!\is_null($message->getSound())) {
+            $payload['android_sound'] = $message->getSound();
+            $payload['ios_sound'] = $message->getSound() . '.wav';
+        }
+        if (!\is_null($message->getBadge())) {
+            $payload['ios_badgeType'] = 'SetTo';
+            $payload['ios_badgeCount'] = $message->getBadge();
+        }
+        if (!\is_null($message->getContentAvailable())) {
+            $payload['content_available'] = true;
+        }
+        if (!\is_null($message->getPriority())) {
+            $payload['priority'] = match ($message->getPriority()) {
+                Priority::HIGH => 10,
+                Priority::NORMAL => 5,
+            };
+        }
+
+        $results = $this->request(
+            method: 'POST',
+            url: 'https://onesignal.com/api/v1/notifications',
+            headers: [
+                'Content-Type: application/json',
+                "Authorization: Basic {$this->apiKey}",
+            ],
+            body: $payload
+        );
+
+        $response = new Response($this->getType());
+
+        if ($results['statusCode'] >= 200 && $results['statusCode'] < 300) {
+            $response->setDeliveredTo(\count($message->getTo()));
+            foreach ($message->getTo() as $to) {
+                $response->addResult($to);
+            }
+        } else {
+            foreach ($message->getTo() as $to) {
+                $response->addResult($to, $results['response']['errors'][0] ?? 'Unknown error');
+            }
+        }
+
+        return $response->toArray();
+    }
+}
diff --git a/tests/Messaging/Adapter/Push/OneSignalTest.php b/tests/Messaging/Adapter/Push/OneSignalTest.php
new file mode 100644
index 00000000..ce093903
--- /dev/null
+++ b/tests/Messaging/Adapter/Push/OneSignalTest.php
@@ -0,0 +1,23 @@
+<?php
+
+namespace Utopia\Tests\Adapter\Push;
+
+use Utopia\Messaging\Adapter\Push\OneSignal as OneSignalAdapter;
+
+class OneSignalTest extends Base
+{
+    protected function setUp(): void
+    {
+        parent::setUp();
+
+        $appId = \getenv('ONESIGNAL_APP_ID');
+        $apiKey = \getenv('ONESIGNAL_API_KEY');
+
+        $this->adapter = new OneSignalAdapter($appId, $apiKey);
+    }
+
+    protected function getTo(): array
+    {
+        return [\getenv('ONESIGNAL_TO')];
+    }
+}