Both yes and no! The use of tattoos is not restricted by IFBB rules, and many bodybuilders do have tattoos. But many bodybuilders who compete in more prestigious contests, like Mr. Olympia, will refrain from getting tattoos since they can cover up some of the minute nuances that can make a contestant victorious. And in fact, when judges need to decide between two participants who are tied, certain tournaments (including the IFBB!) urge them to see tattoos negatively. However, they play a far smaller role in the evaluation and won’t instantly discount the effort a competitor has put forward.