diff --git a/src/Resource/Link.php b/src/Resource/Link.php
new file mode 100644
index 0000000..cd2de39
--- /dev/null
+++ b/src/Resource/Link.php
@@ -0,0 +1,144 @@
+<?php
+
+/**
+ * @package Zammad API Client
+ * @author  Fran Rey <franreycastedo@gmail.com>
+ */
+
+namespace ZammadAPIClient\Resource;
+
+class Link extends AbstractResource
+{
+    const URLS = [
+        'get'    => 'links',
+        'add'    => 'links/add',
+        'remove' => 'links/remove'
+    ];
+
+    const LINKTYPES = [
+        'normal',
+        'parent',
+        'child'
+    ];
+
+    /**
+     * Fetches links of an object.
+     *
+     * @param int    $object_id     ID of the object to fetch links for.
+     * @param string $object_type   Type of object to fetch links for (e. g. 'Ticket').
+     *
+     * @return object               This object.
+     */
+    public function get($object_id, $object_type = 'Ticket')
+    {
+        $this->clearError();
+
+        $object_id = intval($object_id);
+        if ( empty($object_id) ) {
+            throw new \RuntimeException('Missing object ID');
+        }
+
+        $response = $this->getClient()->get(
+            $this->getURL('get'),
+            [
+                'link_object' => $object_type,
+                'link_object_value'   => $object_id,
+            ]
+        );
+
+        if ( $response->hasError() ) {
+            $this->setError( $response->getError() );
+        }
+        else {
+            $this->clearError();
+            $this->setRemoteData( $response->getData() );
+        }
+
+        return $this;
+    }
+
+    /**
+     * Adds a link between two tickets.
+     *
+     * @param Ticket $source        Source ticket object.
+     * @param Ticket $target        Target ticket object.
+     * @param string $type          Link type (default: 'normal').
+     *
+     * @return object               This object.
+     */
+    public function add(Ticket $source, Ticket $target, $type = 'normal')
+    {
+        $this->clearError();
+
+        if ( empty($source->getID()) || empty($target->getID()) ) {
+            $this->setError('Tickets not valid.');
+            return $this;
+        }
+        if ( !in_array($type, self::LINKTYPES, true) ) {
+            $this->setError('Linktype is not supported.');
+            return $this;
+        }
+
+        $response = $this->getClient()->post(
+            $this->getURL('add'),
+            [
+                'link_type'                 => $type,
+                'link_object_target'        => 'Ticket',
+                'link_object_target_value'  => $target->getID(),
+                'link_object_source'        => 'Ticket',
+                'link_object_source_number' => $source->getValue('number')
+            ]
+        );
+
+        if ( $response->hasError() ) {
+            $this->setError( $response->getError() );
+        }
+
+        return $this;
+    }
+
+    /**
+     * Removes a link between two tickets.
+     *
+     * @param Ticket $source        Source ticket object.
+     * @param Ticket $target       Target ticket object.
+     * @param string $type         Link type (default: 'normal').
+     *
+     * @return object               This object.
+     */
+    public function remove(Ticket $source, Ticket $target, $type = 'normal')
+    {
+        $this->clearError();
+
+        if ( empty($source->getID()) || empty($target->getID()) ) {
+            $this->setError('Tickets not valid.');
+            return $this;
+        }
+        if ( !in_array($type, self::LINKTYPES, true) ) {
+            $this->setError('Linktype is not supported.');
+            return $this;
+        }
+
+        $response = $this->getClient()->delete(
+            $this->getURL('remove'),
+            [
+                'link_type'                => $type,
+                'link_object_source'       => 'Ticket',
+                'link_object_source_value' => $source->getID(),
+                'link_object_target'       => 'Ticket',
+                'link_object_target_value' => $target->getID()
+            ]
+        );
+
+        if ( $response->hasError() ) {
+            $this->setError( $response->getError() );
+            return $this;
+        }
+
+        $this->clearError();
+        $this->clearRemoteData();
+        $this->clearUnsavedValues();
+
+        return $this;
+    }
+}
diff --git a/src/ResourceType.php b/src/ResourceType.php
index aa5fb3c..4fe0f90 100644
--- a/src/ResourceType.php
+++ b/src/ResourceType.php
@@ -18,4 +18,5 @@ class ResourceType
     const TICKET          = '\\ZammadAPIClient\\Resource\\Ticket';
     const TICKET_ARTICLE  = '\\ZammadAPIClient\\Resource\\TicketArticle';
     const TAG             = '\\ZammadAPIClient\\Resource\\Tag';
+    const LINK            = '\\ZammadAPIClient\\Resource\\Link';
 }
diff --git a/test/ZammadAPIClient/Resource/LinkTest.php b/test/ZammadAPIClient/Resource/LinkTest.php
new file mode 100644
index 0000000..3317969
--- /dev/null
+++ b/test/ZammadAPIClient/Resource/LinkTest.php
@@ -0,0 +1,310 @@
+<?php
+
+namespace ZammadAPIClient\Resource;
+
+use PHPUnit\Framework\TestCase;
+use ZammadAPIClient\Client;
+use ZammadAPIClient\ResourceType;
+
+class LinkTest extends TestCase
+{
+    private static $client;
+    private static $source_ticket;
+    private static $target_ticket;
+
+    public static function setUpBeforeClass(): void
+    {
+        $client_config = [];
+
+        $env_keys = [
+            'url'      => 'ZAMMAD_PHP_API_CLIENT_UNIT_TESTS_URL',
+            'username' => 'ZAMMAD_PHP_API_CLIENT_UNIT_TESTS_USERNAME',
+            'password' => 'ZAMMAD_PHP_API_CLIENT_UNIT_TESTS_PASSWORD',
+        ];
+        foreach ( $env_keys as $config_key => $env_key ) {
+            $value = getenv( $env_key );
+            if ( empty($value) ) {
+                throw new \RuntimeException("Missing environment variable $env_key");
+            }
+
+            $client_config[$config_key] = $value;
+        }
+
+        self::$client = new Client($client_config);
+    }
+
+    public function setUp(): void
+    {
+        parent::setUp();
+        self::createTickets();
+    }
+
+    public function tearDown(): void
+    {
+        parent::tearDown();
+        self::deleteTickets();
+    }
+
+    public static function getClient()
+    {
+        return self::$client;
+    }
+
+    protected static function getUniqueID()
+    {
+        return uniqid('', true);
+    }
+
+    private static function createTickets()
+    {
+        self::$source_ticket = self::getClient()->resource(ResourceType::TICKET);
+        self::$source_ticket->setValues([
+            'group_id'    => 1,
+            'priority_id' => 1,
+            'state_id'    => 1,
+            'title'       => 'Unit test link source ticket ' . self::getUniqueID(),
+            'customer_id' => 1,
+            'article'     => [
+                'subject' => 'Unit test article 1 ' . self::getUniqueID(),
+                'body'    => 'Unit test article 1... ' . self::getUniqueID(),
+            ],
+        ]);
+        self::$source_ticket->save();
+
+        self::$target_ticket = self::getClient()->resource(ResourceType::TICKET);
+        self::$target_ticket->setValues([
+            'group_id'    => 1,
+            'priority_id' => 1,
+            'state_id'    => 1,
+            'title'       => 'Unit test link target ticket ' . self::getUniqueID(),
+            'customer_id' => 1,
+            'article'     => [
+                'subject' => 'Unit test article 2 ' . self::getUniqueID(),
+                'body'    => 'Unit test article 2... ' . self::getUniqueID(),
+            ],
+        ]);
+        self::$target_ticket->save();
+    }
+
+    private static function deleteTickets()
+    {
+        if (!empty(self::$source_ticket)) {
+            self::$source_ticket->delete();
+        }
+        if (!empty(self::$target_ticket)) {
+            self::$target_ticket->delete();
+        }
+    }
+
+    public function testGetWithoutObjectId()
+    {
+        $link = self::getClient()->resource(ResourceType::LINK);
+
+        $this->expectException(\RuntimeException::class);
+        $this->expectExceptionMessage('Missing object ID');
+
+        $link->get('', 'Ticket');
+    }
+
+    public function testGetWithInvalidObjectId()
+    {
+        $link = self::getClient()->resource(ResourceType::LINK);
+
+        $this->expectException(\RuntimeException::class);
+        $this->expectExceptionMessage('Missing object ID');
+
+        $link->get(0, 'Ticket');
+    }
+
+    public function testGet()
+    {
+        $link = self::getClient()->resource(ResourceType::LINK);
+        $result = $link->get(self::$source_ticket->getID(), 'Ticket');
+
+        $this->assertSame($link, $result);
+        $this->assertFalse($link->hasError());
+    }
+
+    public function testGetByTicketId()
+    {
+        $link = self::getClient()->resource(ResourceType::LINK);
+        $result = $link->get(self::$source_ticket->getID());
+
+        $this->assertSame($link, $result);
+        $this->assertFalse($link->hasError());
+    }
+
+    public function testAddWithoutSourceTicket()
+    {
+        $link = self::getClient()->resource(ResourceType::LINK);
+
+        $this->expectException(\TypeError::class);
+
+        $link->add(null, null);
+    }
+
+    public function testAddWithoutTargetTicket()
+    {
+        $link = self::getClient()->resource(ResourceType::LINK);
+
+        $this->expectException(\TypeError::class);
+
+        $link->add(self::$source_ticket, null);
+    }
+
+    public function testAdd()
+    {
+        $link = self::getClient()->resource(ResourceType::LINK);
+        $result = $link->add(self::$source_ticket, self::$target_ticket, 'normal');
+
+        $this->assertSame($link, $result);
+        $this->assertFalse($link->hasError());
+    }
+
+    public function testAddWithParentLinkType()
+    {
+        $link = self::getClient()->resource(ResourceType::LINK);
+        $result = $link->add(self::$source_ticket, self::$target_ticket, 'parent');
+
+        $this->assertSame($link, $result);
+        $this->assertFalse($link->hasError());
+    }
+
+    public function testAddWithChildLinkType()
+    {
+        $link = self::getClient()->resource(ResourceType::LINK);
+        $result = $link->add(self::$source_ticket, self::$target_ticket, 'child');
+
+        $this->assertSame($link, $result);
+        $this->assertFalse($link->hasError());
+    }
+
+    public function testAddWithInvalidLinkType()
+    {
+        $link = self::getClient()->resource(ResourceType::LINK);
+        $link->add(self::$source_ticket, self::$target_ticket, 'invalid_type');
+
+        $this->assertNotEmpty($link->getError());
+        $this->assertSame('Linktype is not supported.', $link->getError());
+    }
+
+    public function testAddWithInvalidTickets()
+    {
+        $source_ticket = self::getClient()->resource(ResourceType::TICKET);
+        $target_ticket = self::getClient()->resource(ResourceType::TICKET);
+
+        $link = self::getClient()->resource(ResourceType::LINK);
+        $link->add($source_ticket, $target_ticket);
+
+        $this->assertNotEmpty($link->getError());
+        $this->assertSame('Tickets not valid.', $link->getError());
+    }
+
+    public function testRemoveWithoutSourceTicket()
+    {
+        $link = self::getClient()->resource(ResourceType::LINK);
+
+        $this->expectException(\TypeError::class);
+
+        $link->remove(null, null);
+    }
+
+    public function testRemoveWithoutTargetTicket()
+    {
+        $link = self::getClient()->resource(ResourceType::LINK);
+
+        $this->expectException(\TypeError::class);
+
+        $link->remove(self::$source_ticket, null);
+    }
+
+    public function testRemoveWithInvalidLinkType()
+    {
+        $link = self::getClient()->resource(ResourceType::LINK);
+        $link->remove(self::$source_ticket, self::$target_ticket, 'invalid_type');
+
+        $this->assertNotEmpty($link->getError());
+        $this->assertSame('Linktype is not supported.', $link->getError());
+    }
+
+    public function testRemoveWithInvalidTickets()
+    {
+        $source_ticket = self::getClient()->resource(ResourceType::TICKET);
+        $target_ticket = self::getClient()->resource(ResourceType::TICKET);
+
+        $link = self::getClient()->resource(ResourceType::LINK);
+        $link->remove($source_ticket, $target_ticket);
+
+        $this->assertNotEmpty($link->getError());
+        $this->assertSame('Tickets not valid.', $link->getError());
+    }
+
+    public function testRemove()
+    {
+        $link = self::getClient()->resource(ResourceType::LINK);
+        $link->add(self::$source_ticket, self::$target_ticket, 'normal');
+
+        $this->assertFalse($link->hasError());
+
+        $link = self::getClient()->resource(ResourceType::LINK);
+        $result = $link->remove(self::$source_ticket, self::$target_ticket, 'normal');
+
+        $this->assertSame($link, $result);
+        $this->assertFalse($link->hasError(), 'Remove error: ' . $link->getError());
+    }
+
+    public function testAddAndVerify()
+    {
+        $link = self::getClient()->resource(ResourceType::LINK);
+        $result = $link->add(self::$source_ticket, self::$target_ticket, 'normal');
+
+        $this->assertSame($link, $result);
+        $this->assertFalse($link->hasError());
+
+        $link = self::getClient()->resource(ResourceType::LINK);
+        $link->get(self::$source_ticket->getID(), 'Ticket');
+
+        $links = $link->getValue('links');
+        $this->assertIsArray($links);
+
+        $found_link = false;
+        foreach ($links as $linked_ticket) {
+            if ($linked_ticket['link_object_value'] == self::$target_ticket->getID()
+                && $linked_ticket['link_type'] === 'normal') {
+                $found_link = true;
+                break;
+            }
+        }
+        $this->assertTrue($found_link, 'Link was not found after add operation');
+    }
+
+    public function testRemoveAndVerify()
+    {
+        $link = self::getClient()->resource(ResourceType::LINK);
+        $link->add(self::$source_ticket, self::$target_ticket, 'normal');
+
+        $this->assertFalse($link->hasError());
+
+        $link = self::getClient()->resource(ResourceType::LINK);
+        $result = $link->remove(self::$source_ticket, self::$target_ticket, 'normal');
+
+        $this->assertSame($link, $result);
+        $this->assertFalse($link->hasError(), 'Remove error: ' . $link->getError());
+
+        $link = self::getClient()->resource(ResourceType::LINK);
+        $link->get(self::$source_ticket->getID(), 'Ticket');
+
+        $links = $link->getValue('links');
+        $this->assertIsArray($links);
+
+        $found_link = false;
+        foreach ($links as $linked_ticket) {
+            if ($linked_ticket['link_object_value'] == self::$target_ticket->getID()
+                && $linked_ticket['link_type'] === 'normal') {
+                $found_link = true;
+                break;
+            }
+        }
+        $this->assertFalse($found_link, 'Link was still found after remove operation');
+    }
+}