List of Famous people who are 40

Ethan Rains is an Iranian-American actor, best known for his portrayal of Dr. Leo Julian on the second season of SOAPnet's General Hospital: Night Shift, a 13-episode prime time spin-off of the ABC daytime soap opera General Hospital. In December 2011, he guest starred on Days of Our Lives as a bad guy in a storyline involving illegal internet gambling.

Chauncey Leopardi is an American actor known for playing Michael "Squints" Palledorous in the 1993 film The Sandlot.

Shauna Macdonald is a Scottish actress. She began her career starring in The Debt Collector (1999). She then had her breakthrough starring as Sam Buxton in the television series Spooks (2003–2004). After departing the series, she starred as Sarah Carter in the horror film The Descent (2005), the role for which she is best known. She gained widespread recognition and praise for her performance, and was nominated for the Saturn Award for Best Actress. The film established Macdonald as a scream queen. She reprised her role in its sequel The Descent Part 2 (2009).

Ang Li Peng was a former Malaysian badminton player. She was the women's doubles gold medalist at the 2002 Commonwelath Games in Manchester, England. At the IBF World Grand Prix event, she won the women's doubles title in 1999 Polish Open partnered with Chor Hooi Yee. She emerged as the National champion in 2002 in the women's doubles event with Lim Pek Siah.

Erika Sainte is a Belgian actress. In 2012, she won the Magritte Award for Most Promising Actress for her role in She is Not Crying, She is Singing.

Shawn Maurice Mims, known mononymously as Mims, is an American rapper, songwriter and record executive from Washington Heights, New York City. He is best known for his commercial debut single "This Is Why I'm Hot", which peaked at number one on the US Billboard Hot 100 chart. Following the release of his hit single, Mims' debut album, Music Is My Savior, was released in March 2007.

Fredrick Patacchia Jr. is an American professional surfer. He retired from the World Surf League after a perfect 10 at the Hurley Pro at Lower Trestles on September 9, 2015.