List of Famous people who are 40

Nikolay Vladimirovich Davydenko is a Russian former professional tennis player. He achieved a career-high singles ranking of World No. 3 in November 2006. Davydenko's best result in a Grand Slam tournament was reaching the semi-finals, which he accomplished on four occasions: twice each at the French Open and the U.S. Open, losing to Roger Federer in all but one of them. His biggest achievement was winning the 2009 ATP World Tour Finals, and he also won three ATP Masters Series. In mid-October 2014 Davydenko retired from competitions.

Katharina Mückstein is an Austrian film director, writer and producer. Narrative films Mückstein wrote and directed include Talea and L'Animale. Mückstein also wrote, directed and produced the documentaries Holz Erde Fleisch and Tiere und andere Menschen.

József "Joci" Pápai is a Hungarian singer, voice actor, rapper and guitarist of Romani descent. He represented Hungary at the Eurovision Song Contest 2017 with the song "Origo" finishing in 8th place. He represented Hungary again at the Eurovision Song Contest 2019 with the song "Az én apám". However he failed to qualify for the grand final being the first Hungarian entry not to since returning in 2011.

Tolga Güleç is a Turkish actor. He started studying Business Administration at the Çukurova University. However, he decided to pursue a different path in fine arts and left Çukurova University to study and graduate from Dokuz Eylül University's Faculty of Fine Arts Theater Department, Acting Department.

Jean-Julien Rojer is a Dutch professional tennis player from Curaçao, who specialises in doubles. He achieved his career-high ATP doubles ranking of World No. 3 on 23 November 2015. Rojer has won 29 doubles titles on the ATP Tour, including three at Masters 1000 level. His highest ATP singles ranking is World No. 218, achieved on 15 August 2005. He currently plays with fellow Dutchman Wesley Koolhof, and his former partners include Eric Butorac, Aisam-ul-Haq Qureshi and Horia Tecău.

Rédouane Asloum is a French boxer. He competed in the men's light flyweight event at the 2004 Summer Olympics.

Vera Kobalia is a Georgian politician who has served in the Cabinet of Georgia as the country's Minister of Economy and Sustainable Development from 2 July 2010 to 25 October 2012.

Nina Nasr Zanjani is an Iranian-Swedish actress. She played one of the two lead roles in Helena Bergström's directorial debut Mind the Gap as the daughter Yasmin.

Alejandro Damián Domínguez, also known as Chori, is a former Argentinian footballer who played as an attacking midfielder or a second striker.

Marion Motin is a French dancer and choreographer.