List of Famous people who are 31

Rei Ohara is a Japanese long-distance runner. She competed in the 10,000 metres at the 2015 World Championships in Beijing placing 22nd.

Rafael Forster is a Brazilian professional footballer who plays as a defender for Juventude, on loan from Botafogo. Mainly a central defender, he can also play as a left-back.

Nishikigi Tetsuya is a Japanese professional sumo wrestler from Morioka. He made his debut in March 2006 and wrestles for Isenoumi stable. His highest rank has been Maegashira 2 and he has won championships at Jūryō and Makushita level.

Arisa Murata is a Japanese freestyle skier, specializing in moguls.

Jazmín Tatiana Pinedo Chau is a television presenter, television personality and former model. She is a former host of the Esto es Guerra reality show on América Televisión and Espectáculos on Latina Televisión.

Christian Lucas Madsen is an American actor. He is best known for his roles in the films Divergent (2014) and Palo Alto (2013).

José Rogério de Oliveira, known as Rogério, is a Brazilian professional footballer who plays as a forward or winger for Bahia.

Tetsuya Yoroizaka is a Japanese long-distance runner. He competed in the 10,000 metres at the 2015 World Championships in Beijing.

Tina Trstenjak is a Slovenian judoka who won gold in the Women's 63 kg at the 2016 Summer Olympics in Rio de Janeiro, Brazil. She also won the silver medal in Women's Judo 63 kg, at the 2020 Summer Olympics in Tokyo, Japan.

Sarah Gabrielle Cabral de Menezes is a judoka from Brazil. In 2012, she became the first Brazilian woman to win an Olympic gold medal in judo, after defeating the reigning Olympic champion Alina Dumitru. She also competed at the 2008 and 2016 Summer Olympics.