List of Famous people who are 40

Michelle Courtens, performing as Michelle, is a Dutch singer, who is known from her performance in the Eurovision Song Contest 2001.

John Michael White is a Canadian film, television and commercial actor. He is best known for his portrayal of Erik Stifler in American Pie Presents: The Naked Mile and American Pie Presents: Beta House.

Oliver Zaugg is a Swiss former professional road bicycle racer, who competed professionally between 2004 and 2016 for Saunier Duval–Prodir, Gerolsteiner, Liquigas–Doimo, RadioShack–Nissan, Tinkoff–Saxo and IAM Cycling.

Thomas John Guiry is an American actor. He is best known for his lead performance as Scott Smalls in the cult coming-of-age film The Sandlot, which he held at the age of 12, and his role in NBC crime drama The Black Donnellys. He has appeared in numerous high-profile films and television series, including U-571, Black Hawk Down, Mystic River, Black Irish, and The Revenant.

Juliette Chantal Ah-Wan is a badminton player from Seychelles. Born in Victoria, Seychelles, Ah-Wan debuted in 1995 at the age 0f 14. In 2007, she awarded as Sportslady of the Year. Ah-Wan has competed in some international tournament, including 2008 Summer Olympics, and Commonwealth Games from 2002–2018.

Rochelle Gilmore is an Australian former racing cyclist currently living in Italy. She was the owner and manager of the professional cycling team Wiggle High5.

Nataliya Anatoliïvna Skakun is a Ukrainian weightlifter.

Jonathan Marray is a former British tennis player and a Wimbledon Men's Doubles champion. Marray is a former top 20 doubles player, reaching a career high of world no. 15 in January 2013, mainly due to more regular appearances on the ATP World Tour, following his victory at Wimbledon 2012. He has also competed on the singles tour, reaching world no. 215 in April 2005, but was unable to continue his singles career, in part due to injuries.