Where is the oil dipstick on Honda gl1100?

It does not have one. With the bike on the center stand, look by the foot brake lever, and way in there u will c a small window with a small screw head. Best way to check this is with a flash lite on the window, have someone turn the engine off and you will c where the oil settles. Guess the engineers were out to lunch when they designed this one.

There is an aftermarket dipstick that can be purchased through J.C. Whitney for those who want the convenience of a dipstick. This avoids the tedious process of getting on your knees with a flashlight to check your oil in the window.