List of Famous people who are 40

Timothy A. Boetsch is an American professional mixed martial artist currently fighting in the Middleweight division of the Ultimate Fighting Championship. A professional since 2006, Boetsch has formerly competed as an alternate for the New York Pitbulls in the International Fight League and King of the Cage.

Maik Beermann is a German politician Christian Democratic Union (CDU) who served as a member of the German Bundestag from 2013 to 2021.

Lucía Lapiedra is a former Spanish pornographic actress, who has been called the Queen of Porn.

Maxwell Scherrer Cabelino Andrade, known as Maxwell, is a Brazilian former professional footballer who played as a left-back. He is currently employed by Paris Saint-Germain as assistant sporting director.

Kim Dong-hyun, anglicized as Dong Hyun Kim, is a South Korean mixed martial artist currently fighting in the UFC's welterweight division. He was signed by the UFC after fighting in the Japanese promotion DEEP and in the South Korean promotion Spirit MC.

Laouni Mouhid, commonly known by his stage name La Fouine, with additional aliases such as Fouiny Babe or just Fouiny, is a French-Moroccan rapper, singer-songwriter and record producer. He is owner of Banlieue Sale and clothing line "Street Swagg".

Caterina Scorsone is a Canadian-American actress. She is best known for playing Dr. Amelia Shepherd on the ABC medical drama Grey's Anatomy (2010–present) and its spin-offs Private Practice (2010–2013) and Station 19 (2018–present). Prior to this, she made her debut as a child actor on the Canadian children's program, Mr. Dressup. She also appeared in a number of films, including 2010's Edge of Darkness and 2014's The November Man. Other television credits include Jess Mastriani on Missing, Callie Wilkinson on Crash, and Alice Hamilton on Alice.

María Elena Ballesteros Triguero is a Spanish actress.

John Francis O'Shea is an Irish former professional footballer and currently the first-team coach for Reading. He was known for his versatility in playing several positions on either side of the pitch or the centre.

Mitchell Guy Johnson is a former Australian cricketer, who played all forms of the game until his retirement from international cricket in 2015. He is a left-arm fast bowler and left-handed batsman. He made his Test debut for Australia in November 2007. Johnson is considered to be one of the great fast bowlers of his era.