Are there any celebrities, such as artists, politicians, etc, that also have a FIDE title? Also I don't want people whom had chess as a catapult to their job, because Karpov would be a great example of a politician who became so because of chess, or Carlsen whose modeling career is chess-based.
here's a list of some famous chess players who were able gain fame in other areas.Just to mention ,none of them are actors or politicians.
Former world Champion Mikhail Botvinnik was a famous computer scientist and electrical engineer. He was one of earliest pioneers of AI.
Attacking player Extraordinaire Rashid Nezhmetdinov was also a checkers player,strong enough to participate in Soviet Checkers Championships.
Fred Reinfield was an author who wrote several books ranging from Philately,Numismatics to Physics,Geology and medicine.
Milan Vidmar was a very well known academic and electrical engineer who actually became an university's Chancellor(Equivalent to Dean) and went on to build a Institute which now bears his name.
Former world champion Max Euwe- Mathematician
Mark Taimanov- Concert Pianist
Robert Hübner is a papyrologist and was recognised as a leading player of Xiangqi(a chinese board game) who was not from China.
Here are some players who does not fit "famous in other areas" bill, but still were able to build their own career in other fields.
Lajos Portisch- Opera Singer
John Nunn- Mathematician