But don't fret too much, it's unlikely a machete-wielding man with a hockey mask will creep up behind you. That is, unless you're one of several Hollywood celebs born on Friday the 13th.
Mary-Kate and Ashley Olsen, Steve Buscemi, Julia Louis-Dreyfus and Darius Rucker, among others, were all born on a spooky Friday.
With a little help from Celeb Buzz, here's a look at what could be 12 of the most unlucky Hollywood celebs.
Because 13 scares the heck out of us.