List of Famous people who are 31

Koen Verweij is a Dutch speed skater and inline speed skater. At the end of the skating season 2008–09 he made a transfer from the Jong Oranje team of the national skating union (KNSB) to the commercial team of TVM.

Marina Kawano is a Japanese singer from Kasuga, Fukuoka who is signed to SME Records. She started her singing career after winning the 4th Animax All-Japan Anisong Grand Prix in 2010.

John Brown, nicknamed "Smokey" or "Smoke," is an American football wide receiver for the Buffalo Bills of the National Football League (NFL). He played college football at Pittsburg State and was drafted by the Arizona Cardinals in the third round of the 2014 NFL Draft.

Michael D. Mauti is a former American football linebacker. He played college football at Penn State and was drafted by the Minnesota Vikings in the seventh round of the 2013 NFL Draft. He has also played for the New Orleans Saints.

Mel Rojas is a Dominican-American professional baseball outfielder for the Hanshin Tigers of Nippon Professional Baseball. He has previously played in the KBO League for the KT Wiz.

José Pedro Kumamoto Aguilar is a Mexican political activist who in 2015 became the first independent candidate to win a seat in the Congress of Jalisco. In 2017, he ran as an independent candidate for Senate of the Republic representing Jalisco, but he was not elected.

Johnathon Simpson Snedden Russell is a Scottish professional footballer who plays as a forward for American club Sporting Kansas City. He has previously played for Dundee United, Forfar Athletic, Raith Rovers and Derby County. Russell represented Scotland at under-19 and under-21 level. He was first named in the Scotland squad in 2012, and made his full international debut in November 2014.

Joshiko Saibou is a German professional basketball player for JDA Dijon of the LNB Pro A and Basketball Champions League. Saibou usually plays as point guard.

Guilherme de Aguiar Camacho is a Brazilian footballer who plays as a midfielder for Athletico Paranaense on loan from Corinthians.

Serdar Aziz is a Turkish professional footballer who plays as a centre back for Süper Lig club Fenerbahçe.