List of Famous people who are 40

Kiera Cass is an American writer of young adult fiction, best known for The Selection series.

Mustafa Masi Nayyem is an Afghan-Ukrainian journalist, MP, and public figure who took part in Euromaidan in Ukraine. Formerly, he was a reporter for the newspaper "Kommersant Ukraine", the TVi channel, and the Internet newspaper Ukrayinska Pravda. He also participates in Ukrainian journalists' anti-censorship movement, "Stop the censorship!", and Hromadske.TV. In the parliamentary elections on October 26, 2014, he was elected to the Ukrainian parliament on the list of Petro Poroshenko Bloc. He has been described as a reformist parliamentarian. Nayyem did not take part in the 2019 Ukrainian parliamentary election.

Stanley Cheung King-shun is a Hong Kong actor, singer, and presenter. In 2003, Cheung debuted as a member of the short lived boy band Cheers, which won Hong Kong's Best New Artist at Shanghai's Asian Music Festival in 2003. In 2006, Cheung auditioned for TVbeople, a talent casting system hosted by TVB, and was selected to sign a two-year artiste contract with the company along with six other winners. Before acting in dramas, Cheung has hosted several entertainment programmes for TVB. Cheung is perhaps best known for his role as Ka-ming in the 2011 drama serial When Heaven Burns.

Kurniati Kamalia or better known as Titi Kamal is an Indonesian actress and model of Malay descent.

Ma Su is a Chinese actress.

Johan Clarey is a French World Cup alpine ski racer. He specializes in the speed events of downhill and super-G.

José Luis Villanueva Ahumada is a Chilean former footballer. His last squad was Deportes Magallanes.

Oleg Dmitrievich Saprykin is a Russian former professional ice hockey player. Saprykin played with HC Dynamo Moscow, SKA Saint Petersburg, HC Sochi and Avtomobilist Yekaterinburg. He played in the 2009 KHL All-Star Game, held in Red Square and was a member of Ufa's Gagarin Cup championship team in 2011. Saprykin also played parts of seven seasons in the National Hockey League (NHL). He was a first round selection, 11th overall, of the Calgary Flames and also played for the Phoenix Coyotes and Ottawa Senators. Internationally, Saprykin has played with the Russian National Team on two occasions and was a member of the team that won the gold medal at the 2009 World Championship.

Marina Chiche is a French classical violinist.

Álex Ubago is a Spanish singer-songwriter. He is especially known for his heartfelt voice and his ballads. He was able to record his debut album "Que Pides Tu" when manager Iñigo Argomaniz that used to go to Alex's cousin's bar heard a demo that Alex made for his girlfriend, his first cd contain songs from this first demo, the songs are "Sabes" and "Hay Que Ver". Alex started to tour national radios with his guitar to sing his songs live and be interviewed. Eventually this strategy worked and his album finally hit the charts. But he reached absolute fame with the publication of the song "Sin Miedo A Nada", featuring Amaia Montero, his biggest hit to date.