diff --git a/examples/multiple.php b/examples/multiple.php
new file mode 100755
index 0000000..00351af
--- /dev/null
+++ b/examples/multiple.php
@@ -0,0 +1,48 @@
+#!/usr/bin/php
+<?php
+
+namespace splitbrain\phpcli\examples;
+
+require __DIR__ . '/../vendor/autoload.php';
+
+use splitbrain\phpcli\CLI;
+use splitbrain\phpcli\Options;
+
+class Multiple extends CLI
+{
+
+    /**
+     * Register options and arguments on the given $options object
+     *
+     * @param Options $options
+     * @return void
+     */
+    protected function setup(Options $options)
+    {
+        $options->setHelp('This is a simple example, not using any subcommands');
+        $options->registerOption('multiple', 'This option can be specified multiple times.', 'm', true, '', true);
+        $options->registerArgument('argument', 'Arguments can be required or optional. This one is optional', false);
+    }
+
+    /**
+     * Your main program
+     *
+     * Arguments and options have been parsed when this is run
+     *
+     * @param Options $options
+     * @return void
+     */
+    protected function main(Options $options)
+    {
+        if ($options->getOpt('multiple')) {
+            $this->info("multiple was given as " . implode(", ", (array) $options->getOpt('multiple')));
+        }
+
+        $this->info("Number of arguments: " . count($options->getArgs()));
+
+        $this->success("main finished");
+    }
+}
+
+$cli = new Multiple();
+$cli->run();
diff --git a/src/Options.php b/src/Options.php
index 5ee6b69..e1cf963 100644
--- a/src/Options.php
+++ b/src/Options.php
@@ -121,7 +121,7 @@ public function registerArgument($arg, $help, $required = true, $command = '')
         $this->setup[$command]['args'][] = array(
             'name' => $arg,
             'help' => $help,
-            'required' => $required
+            'required' => $required,
         );
     }
 
@@ -156,9 +156,10 @@ public function registerCommand($command, $help)
      * @param string|null $short one character option (specified with -)
      * @param bool|string $needsarg does this option require an argument? give it a name here
      * @param string $command what command does this option apply to
+     * @param bool $multiple this option can be specified multiple times
      * @throws Exception
      */
-    public function registerOption($long, $help, $short = null, $needsarg = false, $command = '')
+    public function registerOption($long, $help, $short = null, $needsarg = false, $command = '', bool $multiple = false)
     {
         if (!isset($this->setup[$command])) {
             throw new Exception("Command $command not registered");
@@ -167,7 +168,8 @@ public function registerOption($long, $help, $short = null, $needsarg = false, $
         $this->setup[$command]['opts'][$long] = array(
             'needsarg' => $needsarg,
             'help' => $help,
-            'short' => $short
+            'short' => $short,
+            'multiple' => $multiple
         );
 
         if ($short) {
@@ -264,7 +266,14 @@ public function parseOptions()
                         throw new Exception("Option $opt requires an argument",
                             Exception::E_OPT_ARG_REQUIRED);
                     }
-                    $this->options[$opt] = $val;
+                    if ($this->setup[$this->command]['opts'][$opt]['multiple']) {
+                        if(!isset($this->options[$opt])) {
+                            $this->options[$opt] = array();
+                        }
+                        $this->options[$opt][] = $val;
+                    } else {
+                        $this->options[$opt] = $val;
+                    }
                 } else {
                     $this->options[$opt] = true;
                 }
@@ -290,7 +299,14 @@ public function parseOptions()
                     throw new Exception("Option $arg requires an argument",
                         Exception::E_OPT_ARG_REQUIRED);
                 }
-                $this->options[$opt] = $val;
+                if ($this->setup[$this->command]['opts'][$opt]['multiple']) {
+                    if(!isset($this->options[$opt])) {
+                        $this->options[$opt] = array();
+                    }
+                    $this->options[$opt][] = $val;
+                } else {
+                    $this->options[$opt] = $val;
+                }
             } else {
                 $this->options[$opt] = true;
             }
diff --git a/tests/OptionsTest.php b/tests/OptionsTest.php
index b8f2782..658fce3 100644
--- a/tests/OptionsTest.php
+++ b/tests/OptionsTest.php
@@ -77,6 +77,16 @@ function test_complex()
         $this->assertEquals(array('foo'), $options->args);
     }
 
+    function test_multiple() 
+    {
+        $options = new Options();
+        $options->registerOption('multiple', 'this option can be specified multiple times', 'm', true, '', true);
+
+        $options->args = array('-m', 'first', '--multiple', 'second', '-m', 'third', '--multiple', 'fourth');
+        $options->parseOptions();
+        $this->assertEquals(array("first", "second", "third", "fourth"), $options->getOpt('multiple'));
+    }
+
     function test_commandhelp()
     {
         $options = new Options();