List of Famous people who are 31

Astrid Ellena Indriana Yunadi, better known simply as Astrid Ellena, is an Indonesian model and beauty pageant titleholder who won Miss Indonesia 2011. She was raised in Surabaya, Indonesia and Gaithersburg, Maryland, United States.

Jennifer Grout is an American singer of Arabic and Amazigh (Tashelhit) music.

Rene Krhin is a Slovenian professional footballer who plays for Castellón and the Slovenia national team as a central midfielder.

Carlos Jhon Garcés Acosta is an Ecuadorian professional footballer who plays as a forward for Barcelona S.C. and the Ecuador national team.

Uwe Helu is a Tongan-born, Japanese international rugby union player who plays as a lock or flanker. He currently plays for Sunwolves in Super Rugby and Yamaha Júbilo in Japan's domestic Top League.He received Japanese Citizenship in 2016.

Mamadou Samassa is a Malian professional footballer who plays as a goalkeeper for Turkish club Sivasspor in the Süper Lig, the top level of Turkish Football. He is a French youth international and represented France at under-18, under-19, and under-20 level.

Krzysztof Kamiński is a Polish footballer who plays as a goalkeeper for Wisła Płock.

Sebastian Seidl is a German judoka. He competed at the 2016 Summer Olympics in the men's 66 kg event, in which he was eliminated in the second round by Fabio Basile. He also competed in the men's 66 kg event at the 2020 Summer Olympics in Tokyo, Japan.

Veronica Egebakken Kristiansen is a Norwegian handball player for Győri Audi ETO KC and the Norwegian national team.

Anthony Ingruber is a Dutch-Australian actor and impressionist. Ingruber is best known for his role as John Doe/Joker in Batman: The Telltale Series and Batman: The Enemy Within as well as a young William Jones in the film The Age of Adaline.