Celebrities who are 31 years old

Kimberly Noel Kardashian (formerly West; born October 21, 1980) is an American socialite, model, media personality, and businesswoman. She first gained media attention as a friend and stylist of Paris Hilton, but received wider notice after the sex tape Kim Kardashian, Superstar, shot in 2002 with her then-boyfriend Ray J, was released in 2007. Later that year, she and her family began to appear in the E! reality television series Keeping Up with the Kardashians (2007–2021). Its success led to the formation of the spin-off series Kourtney and Kim Take New York (2011–2012), Kourtney and Kim Take Miami (2009–2013) and Hulu's successor The Kardashians (2022).

Zachary David Alexander Efron (born October 18, 1987) is an American actor. He began acting professionally in the early 2000s and rose to prominence in the late 2000s for his leading role as Troy Bolton in the High School Musical trilogy (2006–2008). During this time, he also starred in the musical film Hairspray (2007) and the comedy film 17 Again (2009). Efron subsequently rose to mainstream prominence with starring roles in the films New Year's Eve (2011), The Lucky One (2012), The Paperboy (2012), Neighbors (2014), Dirty Grandpa (2016), Baywatch (2017), and The Greatest Showman (2017). He played Ted Bundy in Extremely Wicked, Shockingly Evil and Vile (2019). In 2021, he won a Daytime Emmy Award for the Netflix web documentary series Down to Earth with Zac Efron (2020–present).

Blake Ellender Lively (née Brown; born August 25, 1987) is an American actress. She is the recipient of various accolades, including three Teen Choice Awards, a People's Choice Award, and nominations for two Critics' Choice Awards and an Academy of Country Music Award.

Edward Jack Peter Westwick (born 27 June 1987) is an English actor and musician, best known for his role as Chuck Bass on The CW's teen television drama series Gossip Girl alongside co-stars Blake Lively and Leighton Meester. He made his feature film debut in Children of Men (2006) and has since appeared in the films Breaking and Entering (2006), Son of Rambow (2007), S. Darko (2009), Chalet Girl (2011), J. Edgar (2011), Romeo and Juliet (2013), Bone in the Throat (2015), Freaks of Nature (2015), and Billionaire Ransom (2016).

Candice Susan Swanepoel (born 20 October 1988) is a South African model and philanthropist. She is known for her work with Victoria's Secret. She became a Victoria's Secret Angel in 2010 and is still contracted with the brand. In 2016, she was listed 8th on the Forbes top-earning models list.

Tyler Lee Hoechlin (born September 11, 1987) is an American actor. Initially earning recognition for starring as Michael Sullivan Jr. in the 2002 film Road to Perdition, Hoechlin went on to star as Martin Brewer on 7th Heaven between 2003 and 2007. In television, he is also known for portraying Derek Hale on Teen Wolf and Superman in the Arrowverse series Supergirl and Superman & Lois.

Maria Yuryevna Sharapova (Russian: Мари́я Ю́рьевна Шара́пова, born 19 April 1987) is a Russian former professional tennis player. Although she played under the banner of Russia with the Women's Tennis Association (WTA), she has lived in and been a United States permanent resident since 1994. Sharapova competed on the WTA tour from 2001 to 2020 and had been ranked world No. 1 in singles by the WTA on five separate occasions, for a total of 21 weeks. She is one of ten women, and the only Russian, to hold the career Grand Slam. She is also an Olympic medalist, having won a silver medal in women's singles at the 2012 Summer Olympics in London. Sharapova achieved a rare level of longevity in tennis, with several tennis pundits and former players calling Sharapova one of tennis' best competitors.

Elliot Page (formerly Ellen Page; born February 21, 1987) is a Canadian actor and producer. He has received several accolades. Page first came to recognition for his role in the television franchise Pit Pony (1997–2000), for which he was nominated for a Young Artist Award, and for his recurring roles in Trailer Park Boys (2002) and ReGenesis (2004). He had his breakthrough starring in the film Hard Candy (2005), for which he won an Austin Film Critics Association Award and received an Empire Award nomination. He garnered critical acclaim for portraying the title role in Jason Reitman's film Juno (2007), and earned nominations for an Academy Award, a BAFTA Award, a Critics' Choice Award, a Golden Globe Award and a Screen Actors Guild Award for his performance. At age 20, it made him the fourth-youngest nominee for the Academy Award Best Actress at the time.