diff --git a/lib/Boris/CLIOptionsHandler.php b/lib/Boris/CLIOptionsHandler.php
index ff785f0..b446954 100644
--- a/lib/Boris/CLIOptionsHandler.php
+++ b/lib/Boris/CLIOptionsHandler.php
@@ -14,14 +14,20 @@ class CLIOptionsHandler
      */
     public function handle($boris)
     {
-        $args = getopt('hvr:', array(
+        $args = getopt('ahvr:', array(
+            'autoload',
             'help',
             'version',
-            'require:'
+            'require:',
         ));
         
         foreach ($args as $option => $value) {
             switch ($option) {
+                case 'a':
+                case 'autoload':
+                    $this->_handleAutoloadOption($boris);
+                    break;
+
                 /*
                  * Sets files to load at startup, may be used multiple times,
                  * i.e: boris -r test.php,foo/bar.php -r ba/foo.php --require hey.php
@@ -76,9 +82,10 @@ private function _handleUsageInfo()
 boris is a tiny REPL for PHP
 
 Options:
-  -h, --help     show this help message and exit
-  -r, --require  a comma-separated list of files to require on startup
-  -v, --version  show Boris version
+  -a, --autoload  If in a composer project, automatically finds and requires autoload.php
+  -h, --help      Show this help message and exit
+  -r, --require   A comma-separated list of files to require on startup
+  -v, --version   Show Boris version
 
 USAGE;
         exit(0);
@@ -89,4 +96,24 @@ private function _handleVersion()
         printf("Boris %s\n", Boris::VERSION);
         exit(0);
     }
+
+    private function _handleAutoloadOption($boris)
+    {
+        $boris->onStart(function() {
+            $autoload = null;
+            for ($dir = getenv('PWD'); !$autoload && $dir !== '/'; $dir = dirname($dir)) {
+                if (file_exists("$dir/autoload.php")) {
+                    $autoload = "$dir/autoload.php";
+                } else if (file_exists("$dir/vendor/autoload.php")) {
+                    $autoload = "$dir/vendor/autoload.php";
+                }
+            }
+            if ($autoload) {
+                echo 'Requiring autoload file: ' . $autoload . PHP_EOL;
+                require_once $autoload;
+            } else {
+                echo 'No autoload file found.' . PHP_EOL;
+            }
+        });
+    }
 }