List of Famous people who are 31

Justin Anthony Hamilton is a Croatian-American professional basketball player for the Beijing Ducks of the Chinese Basketball Association. He plays the center position.

Andrew Watt, also known as simply Watt, is an American record producer, singer, and songwriter.

Andreas Mies is a German tennis player. He is a doubles specialist who reached his career-high ATP doubles ranking of world No. 8, achieved in November 2019. He became a Grand Slam champion after winning the 2019 and 2020 French Open men's doubles titles, partnering Kevin Krawietz.

Gisella Anastasia or better known as Gisel Idol is a Singer who is the runner-up of Indonesian Idol.

Danil Ishutin, better known as Dendi, is a Ukrainian professional Dota 2 player. He is best known for his time with Natus Vincere (Na'Vi) for whom he played between 2010 and 2018. He left Na'Vi in 2018 and formed his own Dota 2 organization in 2020, known as B8.

He Zi is an Olympic medal winning Chinese female diver, specialising in the 1 meter springboard, 3 meter springboard and 3 meter synchronised dive.

Keiichi Kimura is a Paralympic swimmer from Japan competing mainly in category S11 events. He has competed at two Summer Paralympics, representing Japan at Beijing in 2008 and London 2012.

Segundo Víctor Ibarbo Guerrero is a Colombian footballer who plays as a winger or forward for Japanese side V-Varen Nagasaki.

Jana Vladimirovna Beller is a Soviet-born German model, best known for winning the sixth cycle of Germany's Next Top Model.

Etienne Emmanuel Eto'o Fils is a Cameroonian football player who last played as a striker for Erste Liga club FC Lustenau in 2012.