List of Famous people who are 40

Satoyama Kōsaku is a retired professional sumo wrestler from Ōshima, Kagoshima Prefecture, Japan. A former amateur sumo champion at Nihon University, he entered professional sumo in 2004 and first reached the top makuuchi division in 2007. His highest rank was maegashira 12. He spent much of his career in the jūryō and makushita divisions, and won a yusho or tournament championship in each. He won promotion back to the top division in 2014 after a seven-year and 37-tournament absence, the longest ever. He was a member of Onoe stable. He retired in November 2018 and is an elder of the Japan Sumo Association under the name of Chiganoura.

Michael Wolf is a German former professional ice hockey forward who played with the Iserolohn Roosters and EHC München in the Deutsche Eishockey Liga (DEL).

Barbora Špotáková is a Czech track and field athlete who competes in the javelin throw. She is a two-time Olympic Champion and three-time World Champion, as well as the current world record holder with a throw of 72.28 m.

Justin Jitae Chon is an American actor, director, and YouTube personality. He has directed two films, Gook (2017) and Ms. Purple (2019). He is also known for portraying Eric Yorkie in The Twilight Saga film series. He is a member of the K-pop parody group Boys Generally Asian.

Anthony Patrick Hudson is an English-American professional association football manager who is currently assistant coach of the United States national team.

Lotte de Beer is a Dutch opera director.

Tora Berger is a retired Norwegian biathlete and Olympic champion.

Park Jung-ah is a South Korean entertainer.

Yorgen Fenech is a Maltese businessman whose main interests are casinos and hotels in Malta. He was head of the Tumas Group and director of the Maltese-Azerbaijan-German company Electrogas.

Önder Turacı is a Turkish former footballer who played as a defender.