List of Famous people who are 31

Mervan Çelik is a Swedish footballer who plays as a midfielder for Swedish club GAIS. He has previously played for GAIS, Rangers, Pescara, Gençlerbirliği, Akhisar Belediyespor, Häcken, and Fatih Karagümrük. He has represented Sweden at youth international level.

Bandar Mohammed Saleh Al-Ahbabi is an Emirati professional association footballer who plays for Al Ain.

Arthur Cunha da Rocha, known as Arthur Rocha or Arthur Cunha, is a Brazilian professional footballer who played as a centre-back for Maltese club Sliema Wanderers.

Alex dos Santos Gonçalves is a Brazilian professional footballer who plays as a forward for Veranópolis.

Chai Biao is a Chinese professional badminton player. Chai has concentrated on men's doubles for the majority of his senior career in badminton. His most successful partnership was with Hong Wei: together they reached several BWF Super Series finals, including the 2014 Masters Final. As Hong has since retired, Chai's current partner in men's doubles is Wang Zekang.

Heo Ga-yoon, better known by the mononym Gayoon, is a South Korean actress and singer. She is a former member of South Korean girl group 4Minute and its sub-group 2Yoon.

Chökyi Gyalpo, also referred to by his secular name Gyaincain Norbu or Gyaltsen Norbu, is considered the 11th Panchen Lama by the government of the People's Republic of China. He is also the vice president of the Buddhist Association of China. Gyalpo is considered by some to be a proxy of the government of China.

Dawin Polanco, who records under the mononym Dawin, is an American singer, songwriter and record producer from Brooklyn, New York. He is best known for the song "Dessert", which reached number 68 on the Billboard Hot 100.

Saqer Otaif is a Saudi Arabian professional footballer who currently plays for Al-Fayha.