List of Famous people who are 40

Lara Abdallat is a Jordanian activist, hacker, and former beauty queen.

Xiyue Wang is a Chinese-American graduate student who was imprisoned in Iran from 2016 to 2019 after being accused of espionage.

Júlio César dos Santos, or simply Júlio Santos, is a Brazilian central defender. He currently plays for Novo Hamburgo.

Brooklyn Sudano is an American actress, singer, and dancer. She is best known for playing the role of Vanessa Scott on the ABC sitcom My Wife and Kids. She also acted in NBC's action series Taken. Sudano is the daughter of superstar "Disco Queen" Grammy Award-winning singer Donna Summer and songwriter Bruce Sudano, and the older sister of Amanda Sudano of the music duo Johnnyswim.

Vasili Vasilyevich Kiryienka is a Belarusian former racing cyclist, who rode professionally between 2006 and 2020 for the OTC Doors, Rietumu Banka–Riga, Tinkoff Credit Systems, Movistar Team and Team Ineos squads.

Tate Aaron Smith is an Australian sprint canoeist who competed in the late 2000s. At the 2008 Summer Olympics in Beijing, he was eliminated in the semifinals of the K-4 1000 m event.

Taylor Phillip Dent is a retired professional tennis player from the United States. He reached a career-high singles ranking of World No. 21, winning 4 singles titles.