diff --git a/Components/Constants/PaymentMethod.php b/Components/Constants/PaymentMethod.php
index 8dd85871..aeb0b5c6 100644
--- a/Components/Constants/PaymentMethod.php
+++ b/Components/Constants/PaymentMethod.php
@@ -23,6 +23,8 @@ class PaymentMethod
     const KLARNA_PAY_LATER = "klarnapaylater";
     const KLARNA_PAY_NOW = "klarnapaynow";
     const KLARNA_SLICE_IT = "klarnasliceit";
+
+    const KLARNA_ONE = "klarna";
     const P24 = "przelewy24";
     const APPLE_PAY = "applepay";
     const APPLEPAY_DIRECT = "applepaydirect";
diff --git a/Components/Installer/PaymentMethods/PaymentMethodsInstaller.php b/Components/Installer/PaymentMethods/PaymentMethodsInstaller.php
index 0829072b..8987e19d 100644
--- a/Components/Installer/PaymentMethods/PaymentMethodsInstaller.php
+++ b/Components/Installer/PaymentMethods/PaymentMethodsInstaller.php
@@ -122,6 +122,7 @@ public static function getSupportedPaymentMethods()
             PaymentMethod::TWINT,
             PaymentMethod::BANCOMAT_PAY,
             PaymentMethod::BLIK,
+            PaymentMethod::KLARNA_ONE
         ];
     }
 
diff --git a/Services/Mollie/Payments/PaymentFactory.php b/Services/Mollie/Payments/PaymentFactory.php
index 3c7dda48..b78441d7 100644
--- a/Services/Mollie/Payments/PaymentFactory.php
+++ b/Services/Mollie/Payments/PaymentFactory.php
@@ -18,6 +18,7 @@
 use MollieShopware\Services\Mollie\Payments\Requests\IDeal;
 use MollieShopware\Services\Mollie\Payments\Requests\In3;
 use MollieShopware\Services\Mollie\Payments\Requests\KBC;
+use MollieShopware\Services\Mollie\Payments\Requests\Klarna;
 use MollieShopware\Services\Mollie\Payments\Requests\PayLater;
 use MollieShopware\Services\Mollie\Payments\Requests\PayNow;
 use MollieShopware\Services\Mollie\Payments\Requests\PayPal;
@@ -111,6 +112,9 @@ public function createByPaymentName($paymentMethod)
 
             case PaymentMethod::BLIK:
                 return new Blik();
+
+            case PaymentMethod::KLARNA_ONE:
+                return new Klarna();
         }
 
         throw new \Exception('Payment handler not found for: ' . $paymentMethod);
diff --git a/Services/Mollie/Payments/Requests/Klarna.php b/Services/Mollie/Payments/Requests/Klarna.php
new file mode 100644
index 00000000..092eddc5
--- /dev/null
+++ b/Services/Mollie/Payments/Requests/Klarna.php
@@ -0,0 +1,34 @@
+<?php
+
+namespace MollieShopware\Services\Mollie\Payments\Requests;
+
+use MollieShopware\Components\Constants\PaymentMethod;
+use MollieShopware\Services\Mollie\Payments\AbstractPayment;
+use MollieShopware\Services\Mollie\Payments\Converters\AddressConverter;
+use MollieShopware\Services\Mollie\Payments\Converters\LineItemConverter;
+use MollieShopware\Services\Mollie\Payments\Exceptions\ApiNotSupportedException;
+use MollieShopware\Services\Mollie\Payments\PaymentInterface;
+
+class Klarna extends AbstractPayment implements PaymentInterface
+{
+
+    /**
+     */
+    public function __construct()
+    {
+        parent::__construct(
+            new AddressConverter(),
+            new LineItemConverter(),
+            PaymentMethod::KLARNA_ONE
+        );
+    }
+
+    /**
+     * @throws ApiNotSupportedException
+     * @return mixed[]|void
+     */
+    public function buildBodyPaymentsAPI()
+    {
+        throw new ApiNotSupportedException('Klarna One does not support the Payments API!');
+    }
+}
diff --git a/Tests/PHPUnit/Components/Installer/PaymentMethodsInstallerTest.php b/Tests/PHPUnit/Components/Installer/PaymentMethodsInstallerTest.php
index e2b18895..22a9bccf 100644
--- a/Tests/PHPUnit/Components/Installer/PaymentMethodsInstallerTest.php
+++ b/Tests/PHPUnit/Components/Installer/PaymentMethodsInstallerTest.php
@@ -53,7 +53,8 @@ public function testSupportedPaymentMethods()
             PaymentMethod::IN3,
             PaymentMethod::TWINT,
             PaymentMethod::BANCOMAT_PAY,
-            PaymentMethod::BLIK
+            PaymentMethod::BLIK,
+            PaymentMethod::KLARNA_ONE,
         ];
 
         $this->assertEquals($expected, PaymentMethodsInstaller::getSupportedPaymentMethods());
diff --git a/Tests/PHPUnit/Services/Mollie/Payments/Requests/KlarnaOneTest.php b/Tests/PHPUnit/Services/Mollie/Payments/Requests/KlarnaOneTest.php
new file mode 100644
index 00000000..d9b97d51
--- /dev/null
+++ b/Tests/PHPUnit/Services/Mollie/Payments/Requests/KlarnaOneTest.php
@@ -0,0 +1,128 @@
+<?php
+
+namespace MollieShopware\Tests\PHPUnit\Services\Mollie\Payments\Requests;
+
+use MollieShopware\Components\Constants\PaymentMethod;
+use MollieShopware\Services\Mollie\Payments\Exceptions\ApiNotSupportedException;
+use MollieShopware\Services\Mollie\Payments\Models\Payment;
+use MollieShopware\Services\Mollie\Payments\Models\PaymentAddress;
+use MollieShopware\Services\Mollie\Payments\Models\PaymentLineItem;
+use MollieShopware\Services\Mollie\Payments\Requests\Klarna;
+use MollieShopware\Services\Mollie\Payments\Requests\PayLater;
+use MollieShopware\Services\Mollie\Payments\Requests\PayNow;
+use MollieShopware\Tests\Utils\Traits\PaymentTestTrait;
+use PHPUnit\Framework\TestCase;
+
+class KlarnaOneTest extends TestCase
+{
+    use PaymentTestTrait;
+
+
+    /**
+     * @var PayLater
+     */
+    private $payment;
+
+    /**
+     * @var PaymentAddress
+     */
+    private $addressInvoice;
+
+    /**
+     * @var PaymentAddress
+     */
+    private $addressShipping;
+
+    /**
+     * @var PaymentLineItem
+     */
+    private $lineItem;
+
+    /**
+     *
+     */
+    public function setUp(): void
+    {
+        $this->payment = new Klarna();
+
+        $this->addressInvoice = $this->getAddressFixture1();
+        $this->addressShipping = $this->getAddressFixture2();
+        $this->lineItem = $this->getLineItemFixture();
+
+        $this->payment->setPayment(
+            new Payment(
+                'UUID-123',
+                'Order UUID-123',
+                '20004',
+                $this->addressInvoice,
+                $this->addressShipping,
+                49.98,
+                [$this->lineItem],
+                'USD',
+                'de_DE',
+                'https://local/redirect',
+                'https://local/notify'
+            )
+        );
+    }
+
+    /**
+     * This test verifies that the Payments-API request
+     * for our payment is correct.
+     * Please note, Klarna does not work with the payments API
+     * so this is just an empty array
+     */
+    public function testPaymentsAPI()
+    {
+        $this->expectException(ApiNotSupportedException::class);
+
+        $this->payment->buildBodyPaymentsAPI();
+    }
+
+    /**
+     * This test verifies that the Orders-API request
+     * for our payment is correct.
+     */
+    public function testOrdersAPI()
+    {
+        $expected = [
+            'method' => PaymentMethod::KLARNA_ONE,
+            'amount' => [
+                'currency' => 'USD',
+                'value' => '49.98',
+            ],
+            'redirectUrl' => 'https://local/redirect',
+            'webhookUrl' => 'https://local/notify',
+            'locale' => 'de_DE',
+            'orderNumber' => '20004',
+            'payment' => [
+                'webhookUrl' => 'https://local/notify',
+            ],
+            'billingAddress' => $this->getExpectedAddressStructure($this->addressInvoice),
+            'shippingAddress' => $this->getExpectedAddressStructure($this->addressShipping),
+            'lines' => [
+                $this->getExpectedLineItemStructure($this->lineItem),
+            ],
+            'metadata' => [],
+        ];
+
+        $requestBody = $this->payment->buildBodyOrdersAPI();
+
+        $this->assertSame($expected, $requestBody);
+    }
+
+    /**
+     * This test verifies that we can set a custom expiration date
+     * for our Orders API request.
+     */
+    public function testExpirationDate()
+    {
+        $dueInDays = 5;
+        $expectedDueDate = date('Y-m-d', strtotime(' + ' . $dueInDays . ' day'));
+
+        $this->payment->setExpirationDays($dueInDays);
+        $request = $this->payment->buildBodyOrdersAPI();
+
+        $this->assertEquals($expectedDueDate, $request['expiresAt']);
+    }
+}