Kimberly Noel Kardashian (born October 21, 1980) is an American media personality, socialite, 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, which she filmed in 2003 with her then-boyfriend Ray J, was released in 2007. Later that year, she and her family began to appear on the E! reality television series Keeping Up with the Kardashians, which aired until 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 The Kardashians (2022–present).

Kardashian has developed a significant presence online and across numerous social media platforms, including her hundreds of millions of followers on Twitter and Instagram. With sisters Kourtney and Khloé, she launched the fashion boutique chain Dash, which operated from 2006 to 2018. Kardashian founded KKW Beauty and KKW Fragrance in 2017, and the shaping underwear or foundation garment company Skims in 2019. She has released a variety of products tied to her name, including the 2014 mobile game Kim Kardashian: Hollywood and the 2015 photo book Selfish. Her acting credits include the films Disaster Movie (2008), Temptation: Confessions of a Marriage Counselor (2013), and PAW Patrol: The Movie (2021), as well as the twelfth season of the anthology horror series American Horror Story (2023).

Time magazine included Kardashian on their list of 2015's 100 most influential people. Both critics and admirers have described her as exemplifying the notion of being famous for being famous. She is estimated to be worth US$1.8 billion, as of 2022. Kardashian has become more politically active by lobbying for prison reform and clemency, and is currently under a four-year law apprenticeship supervised by the legal nonprofit #cut50. Her relationship with rapper Kanye West has also received significant media coverage; the two of them were married from 2014 to 2022 and have four children together.