List of Famous people who are 31

Megumi Yokoyama is a Japanese badminton player.

Johan Erik Liebert Larsson is a Swedish professional footballer who plays as a right back for Allsvenskan club IF Elfsborg. He has represented the Swedish national team.

Jake Thomas is an American actor, voice actor and photographer, perhaps best known for his role as Matt McGuire, the title character's younger brother, in the Disney Channel show Lizzie McGuire (2001–04). In 2002, he won a Young Artist Award for supporting actor for his performance in A.I. Artificial Intelligence (2001). He also appeared in Cory in the House (2007–08), playing the role of Jason Stickler.

Adrien Petit is a French racing cyclist, who currently rides for UCI ProTeam Total Direct Énergie. In September 2015 Direct Énergie announced that Petit would join them for the 2016 season, after five years with Cofidis.

Simone Romagnoli is an Italian professional footballer who plays as a defender for Serie A club Empoli.