List of Famous people who are 31

Lucas Michel Mendes is a Brazilian professional footballer who plays as a centre back but can also play as left back for Qatari club Al-Wakrah.

Kevin Bureau-Poulin is a Canadian professional ice hockey goaltender who is currently playing with IF Björklöven of the HockeyAllsvenskan (Allsv). Poulin was selected by the National Hockey League (NHL)'s New York Islanders in the fifth round, 126th overall, of the 2008 NHL Entry Draft.

Francisca Alejandra Lara Lara, known as Pancha Lara, is a Chilean footballer who plays as a midfielder for French Division 1 Féminine club Le Havre AC and the Chile women's national team.

Tamira Shelah Paszek is an Austrian tennis player.

Gregory Joshue Echenique Carrillo is a Venezuelan professional basketball player who plays for Shimane Susanoo Magic of the Japanese B.League.

Jaka Blažič is a Slovenian professional basketball player for Cedevita Olimpija of the Slovenian League, the ABA League and the EuroCup. He also represents the Slovenian national basketball team. Standing at 1.96 m, he plays the shooting guard and small forward positions.

Aron Kipchumba Koech is a Kenyan hurdler. At the 2015 Athletics Kenya World Championship Trials he finished third in the 400 metres hurdles event. Later that year he represented Kenya in the 400 metres hurdles event at the 2015 World Championships in Athletics in Beijing, China. With a personal best, in a time of 49.38, he finished 22nd in the heats. He was qualified for the semi finals where he finished 19th in a time of 49.54. Again in 2016 he finished third at the 2016 Athletics Kenya Olympic Trials behind his brother and Boniface Mucheru Tumuti. At the Olympics, Koech made the final while his brother was disqualified in the heats. Tumuti went on to capture the silver medal in National Record time, while Koech finished seventh. His 48.49 in the semi final round is her personal record.

Dalenta Jameral Stephens is an American professional basketball player for BC Prometey of the Ukrainian Basketball SuperLeague. He played college basketball for the University of Memphis, where he played four years for the Tigers basketball team.

Lei Chien-ying is a Taiwanese female archer. At the 2012 Summer Olympics she competed for her country in the women's team event and women's individual event. She also represented Chinese Taipei at the 2016 Summer Olympics in Rio de Janeiro winning a bronze medal in the women's team event, with Tan Ya-Ting and Lin Shih-Chia.

Theerathon Bunmathan is a Thai professional footballer who plays as a left back for Yokohama F. Marinos and the Thailand national team. Also owner of the eSports team, Tokio Striker.