List of Famous people who are 40

Kevin Berryman Casey Jr. is an American mixed martial artist who most recently competed in the Middleweight division of Bellator MMA. A professional competitor since 2007, he was a contestant on The Ultimate Fighter: Team Jones vs. Team Sonnen and also competed for Strikeforce, K-1, the RFA, and the UFC.

Thomas Peter Meighan is an English singer and musician, best known as the former lead vocalist for the rock band Kasabian. He enjoyed large-scale success with Kasabian in the 2000s and 2010s. He is said to have an intense, frenetic personality both on and off stage. He has been compared to Liam Gallagher, whom he has referred to as the "perfect frontman". Meighan finished 13th in Radio X's poll of the greatest frontmen.

Owen Lee Hargreaves is a former professional footballer who played as a midfielder. He was known as a hard-working and "solid defensive midfielder who worked tirelessly to win the ball" and provide his teammates with possession. He played with Calgary Foothills as a youth before beginning his professional football career in Germany with Bayern Munich. After seven years with the Munich side – during which time he won four German league titles and the 2000–01 UEFA Champions League – Hargreaves signed for Manchester United in 2007, winning the Premier League and UEFA Champions League in his first season. However, his time at Manchester United was plagued with injuries and he was allowed to leave the club at the end of his contract in June 2011. Hargreaves posted YouTube videos in a bid to convince potential suitors of his fitness, and in August 2011, Manchester City offered a one-year contract to Hargreaves, which he accepted.

Alex Vizorek is a Belgian television host, comedian, writer, and radio personality.

Nakamura Kankurō VI is a Japanese kabuki and film and television actor. Born Masayuki Namino , he is the eldest son of actor Nakamura Kanzaburō XVIII and brother to Nakamura Shichinosuke II.

Denny Sumargo is a former basketball player for Indonesia's basketball national team, actor, model and TV Host. Living in Jakarta, Indonesia, he was known for his speed and powerful slam dunk. He played as a guard.

Morven Christie is a Scottish actress. She played Amanda Hopkins in the ITV drama Grantchester and Alison Hughes in the BBC drama The A Word.

John Arthur Cox IV is a Venezuelan-American professional basketball player. He is 1.96 m (6'5") tall, and he weighs 89 kg (195 lbs.).

Taufik Hidayat is a retired Indonesian badminton player. He is a former World and Olympic champion in the men's singles. He has also won the Indonesia Open six times.

Shiva Keshavan is a six time Olympian and the first Indian representative to compete in luge at the Winter Olympic Games. He set a new Asian speed record at 134.3 km/h (83.5 mph) after beating the previous record of 131.9 km/h (82.0 mph) and won gold medal in the 2011 Asian Luge Cup at Nagano in Japan. In 2012, he set a new Asian track record at 49.590 seconds. He is the reigning Asian Champion.