I'm afraid of...
*Aliens (but only if they look like Signs aliens or those white things with big heads... If they look like us, I'm cool.)
*Heights (though not necessarily of falling, I've fallen down the stairs at work multiple times without fear.)
*Large places alone (not as in empty necessarily but with anyone I don't know.)
*Earwigs (afraid they will actually crawl in my ears when I'm sleeping while camping.)
*Rejection (not "no" from a guy but downright never-talk-to-you-again rejection.)
That's all I can think of at the moment but I'm sure there is more.