I'm scared of heights. whether its climbing 12 ft on an upright ladder (I hate those type) or being up extremely high. I'm a panzy when it comes to that, but being up high in a plane, in a building, etc, isn't a big deal.
Drowning. Seems like one of the worst way to die.
Dying, leaving on a bad note with a loved one. Having them think it was their fault.
Losing someone close to me, the big one being a girlfriend I loved with all of my heart. But I am more afraid of them losing me, not the fact that ID be dying, but that they'd be left without me :/
I am not afraid of dying, in and of itself.