diff --git a/modules/which.py b/modules/which.py
new file mode 100644
index 00000000..a1b51658
--- /dev/null
+++ b/modules/which.py
@@ -0,0 +1,18 @@
+from src import ModuleManager, utils
+
+class Module(ModuleManager.BaseModule):
+    @utils.hook("received.command.which")
+    @utils.kwarg("min_args", 1)
+    @utils.kwarg("help", "Find where a command is provided")
+    @utils.kwarg("usage", "<command>")
+    def which(self, event):
+        command = event["args_split"][0].lower()
+        hooks = self.events.on("received.command").on(command).get_hooks()
+        if not hooks:
+            raise utils.EventError("Unknown command '%s'" % command)
+
+        hook = hooks[0]
+        module = self.bot.modules.from_context(hook.context)
+        event["stdout"].write("%s%s is provided by %s.%s" % (
+            event["command_prefix"], command, module.name,
+            hook.function.__name__))