diff --git a/README.mdown b/README.mdown
index 9fc32d01..e7494dc7 100644
--- a/README.mdown
+++ b/README.mdown
@@ -183,6 +183,7 @@ Processors
 - _WebProcessor_: Adds the current request URI, request method and client IP to a log record.
 - _MemoryUsageProcessor_: Adds the current memory usage to a log record.
 - _MemoryPeakUsageProcessor_: Adds the peak memory usage to a log record.
+- _ProcessIdProcessor_: Adds the process id to a log record.
 
 About
 =====
diff --git a/src/Monolog/Processor/ProcessIdProcessor.php b/src/Monolog/Processor/ProcessIdProcessor.php
new file mode 100644
index 00000000..2fa57bcd
--- /dev/null
+++ b/src/Monolog/Processor/ProcessIdProcessor.php
@@ -0,0 +1,38 @@
+<?php
+
+/*
+ * This file is part of the Monolog package.
+ *
+ * (c) Jordi Boggiano <j.boggiano@seld.be>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Monolog\Processor;
+
+/**
+ * Adds value of getmypid into records
+ *
+ * @author Andreas Hörnicke
+ */
+class ProcessIdProcessor
+{
+    /**
+     * @param  array $record
+     * @return array
+     */
+    public function __invoke(array $record)
+    {
+        $pid = getmypid();
+
+        $record['extra'] = array_merge(
+            $record['extra'],
+            array(
+                'process_id' => $pid,
+            )
+        );
+
+        return $record;
+    }
+}
diff --git a/tests/Monolog/Processor/ProcessIdProcessorTest.php b/tests/Monolog/Processor/ProcessIdProcessorTest.php
new file mode 100644
index 00000000..3d954fb0
--- /dev/null
+++ b/tests/Monolog/Processor/ProcessIdProcessorTest.php
@@ -0,0 +1,29 @@
+<?php
+
+/*
+ * This file is part of the Monolog package.
+ *
+ * (c) Jordi Boggiano <j.boggiano@seld.be>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Monolog\Processor;
+
+use Monolog\TestCase;
+
+class ProcessIdProcessorTest extends TestCase
+{
+    /**
+     * @covers Monolog\Processor\ProcessIdProcessor::__invoke
+     */
+    public function testProcessor()
+    {
+        $processor = new ProcessIdProcessor();
+        $record = $processor($this->getRecord());
+        $this->assertArrayHasKey('process_id', $record['extra']);
+        $this->assertInternalType('int', $record['extra']['process_id']);
+        $this->assertGreaterThan(0, $record['extra']['process_id']);
+    }
+}