Note: This is a list of people known for one profession but who have another, on the side profession. Preferably, the celebrities' two professions should not be related to each other. If a person with dual professions is not listed here, feel free to add that person's name here.
Arts
- Michelangelo Buonarroti, painter, sculptor, and architect
- Leonardo da Vinci (painter, famous for Mona Lisa), many other professions, including: mathematician, inventor, many others
- Borodin (composer), also a chemist
- Nikolai Rimsky-Korsakov (composer), also a naval officer
Astronauts
Business
- Michael Johns (business executive), also a writer
- James Lick (real estate investor), also a farmer, cabinet maker, piano builder
Entertainment
- Fairuza Balk (actress), also a businesswoman
- Rubén Blades (singer), also a lawyer
- Laura Bozzo (talk show host), also a lawyer
- Cantinflas (comedy actor), also a boxer
- Andrew Faulds (actor), also a politician
- Don Francisco (show host), also a tailor
- Bob Hope (comedy actor), also a boxer
- Kenneth Horne (comedy actor), also a businessman
- Julio Iglesias (singer), also a lawyer, professional soccer player.
- Glenda Jackson (actor), also a politician
- Rafael Jose (singer, actor), also a dentist
- Hedy Lamar (actress), also an inventor
- Ricky Melendez (singer, Menudo), also a lawyer
- Walter Mercado (television astrologer), also an actor
- Cristina Saralegui (talk show host), also a magazine writer
- Arnold Schwarzenegger (actor), also a bodybuilder, Governor of California (2003 - )
- Jerry Springer (talk show host), also a politician
- John Travolta (actor), also a pilot
- Roberto Vigoreaux (show host), also a politician
Politics
Religion
Sports
- Bob Arum, (boxing promoter), also a lawyer
- Oscar De La Hoya (boxer), also a singer, fashion designer
- Sixto Escobar (boxer), also a sales-man
- Bob Feller (baseball player), also a businessman
- George Foreman (boxer), also a pastor
- Dan Fortman (American football hall of famer), also a doctor
- Ray Mancini (boxer), also an actor, director
- Rocky Marciano (boxer), also a pilot
- Alberto Mercado (boxer), also a fireman
- Mario Morales (basketball player), also an accountant
- Ferdie Pacheco (boxing trainer), also a doctor
- Jorge Paez (boxer), also an actor
- Carlos Palomino (boxer), also an actor
- Laura Serrano (boxer), also a lawyer
- Julio Toro (BSN basketball coach, Puerto Rico national basketball team coach), also a lawyer
- Jesse Ventura (wrestler), also an actor, politician
- Bernie Williams (baseball player), also a singer
- Ted Williams (baseball player), also a pilot, fisherman
- Steve Young (American football player), also a lawyer
