List of Famous people who are 51

Sonya Caleffi is an Italian serial killer. She was suspected of killing 15 to 18 people and convicted of five of them.

Rónald Alfonso González Brenes is a Costa Rican former professional footballer and current manager.

Paul Anthony Stewart is an American stage and television actor.

Marko Saaresto is the founding member, lead vocalist and primary songwriter of the Finnish alternative rock band Poets of the Fall. Saaresto worked as a graphic designer before forming the band in late 2002. Sam Lake, Saaresto's friend and writer of the Max Payne series of videogames offered Saaresto a job writing the lead single for the game Max Payne 2: The Fall of Max Payne. Saaresto wrote the single along with guitarist Olli Tukiainen and were assisted with the production by Remedy engineer Markus Kaarlonen. The song, "Late Goodbye" became a cult hit and propelled Poets of the Fall's rise to stardom. Saaresto has since toured in over 15 countries with Poets of the Fall. He is a classically trained singer and has a bass-baritone vocals range. He later went on to have bigger success within the video game industry when him and his band wrote and performed for the soundtrack of Alan Wake.