List of Famous people who are 40

Ryan Albert Hansen is an American actor and comedian. He is best known for starring as Dick Casablancas on the noir drama series Veronica Mars (2004–2019), as Kyle Bradway on the Starz comedy series Party Down (2009–2010), and as Nolan in the horror remake film Friday the 13th (2009). Hansen also had a recurring role on the comedy series 2 Broke Girls (2012–2017) and the web series Burning Love (2012–2013).

Austin Taylor O'Brien is an American actor and photographer. He is known for playing the co-lead Danny Madigan in the Arnold Schwarzenegger film Last Action Hero, followed by his turn into romance as Nick Zsigmond in My Girl 2, a part in both The Lawnmower Man and its sequel, and as Josh Greene in the CBS drama Promised Land. He originally gained fame from a Circuit City commercial as a kid who, after finding out he'd saved money, says, "Cool" to the store's employee.

Christopher Paul Backus is an American actor, director and screenwriter.

Lucas John "Luke" Helder is a former University of Wisconsin–Stout student from Pine Island, Minnesota, who earned notoriety as the Midwest Pipe Bomber in May 2002.

Lourdes Cecilia Fernández is an Argentine singer-songwriter, composer and actress. She is the best known as a member of Argentine girl group Bandana and as a frontman of Lourdes, a band that carries her name.

Joshua Baret Henderson is an American actor, model and singer. Henderson is best known for his lead role as John Ross Ewing III in the TNT revival of Dallas (2012–2014). He played Austin McCann on the ABC television series Desperate Housewives (2006–2007), and appeared in films like Step Up. He became widely known after his appearance on The WB singing competition show Popstars 2, where he was one of the winners selected to be a member of the pop group Scene 23.

Adriano Zumbo is an Australian pâtissier and television presenter. He opened his first patisserie in 2007 before rising to prominence as a frequent guest on MasterChef Australia. Zumbo is the titular host of the Australian baking competition program Zumbo's Just Desserts and a judge on the Netflix web series Sugar Rush. As a popular figure he has garnered many nicknames in the media, including "Sweet Assassin", "Patissier of Pain," "the Dark Lord of the Pastry Kitchen" and "Lord Voldecake." He has also been called "Australia's answer to Willy Wonka."

Demetrius Grosse is an American actor and producer. He is best known for his role as Rock in the feature film Straight Outta Compton, Emmett Yawners in the Cinemax television series Banshee, Errol in the FX television series Justified, and Baron Samedi in NBC's Heroes.

Raúl Bravo Sanfélix is a Spanish former professional footballer. Mainly a left back, he could also play in the centre.

Roman Nikolayevich Shirokov is an Russian international football official and a former player.