Juliet Anne Prowse (25 September 1936 – 14 September 1996) was a British-American dancer and actress whose four-decade career included stage, television, and film. She was born in Bombay (today's Mumbai) then part of British India, and raised in South Africa. Known for her attractive legs, she was described after her death as having "arguably the best legs since Betty Grable".

Prowse was born in Bombay, to an English father and South African mother, Phyllis Donne. After her father's death when she was three years old, her mother returned with her to South Africa. She began studying dance a year later, at the age of four.

In her early twenties, she was dancing at a club in Paris when she was spotted by a talent agent and eventually signed to play the small role of Claudine in the upcoming Walter Lang film Can-Can (1960). She had already missed a few opportunities to go to Hollywood because she was already under contract but eventually left a show in Spain in which she was starring to travel to Southern California to appear in Can-Can, which starred Frank Sinatra, Maurice Chevalier, Louis Jourdan, and Shirley MacLaine.

It was during the filming of Can-Can in 1959 that she captured the international spotlight. The Soviet Union's then–Communist Party leader Nikita Khrushchev, during his first American trip, visited the Los Angeles set of the film, and after Prowse performed a rather saucy exhibition of the 19th-century French dance the "can-can" for the Russian leader, he proclaimed it immoral. The ensuing publicity brought Prowse considerable attention in the United States. From there, her career accelerated, especially after her next film later that year, co-starring with rock and roll star Elvis Presley.

Prowse met Frank Sinatra on the set of Can-Can when she was 23 and he was 43 years old. Time magazine did not rate the movie highly, but declared Prowse the best thing in it: "In fact, the only thing really worth seeing is Juliet Prowse, a young South African hoofer who puts some twinkle in the stub-toed choreography. And the only thing really worth hearing is the crack that Frank flips back at Juliet when she whips a redoubtable hip in his direction. 'Don't point,' he gasps. 'It's rude.'" She would also go on to appear with Sinatra and other notable guests such as Ella Fitzgerald, Peter Lawford, Hermione Gingold, the Hi-Lo's, Red Norvo, and Nelson Riddle and his orchestra on the December 1959 Frank Sinatra Show. She at times would sing in the chorus with other guests or Sinatra would sing to her.

Prowse's next major musical and dancing role was alongside Elvis Presley in his film shot partially in West Germany about his recent Army draftee experiences that drew world youth attention for two years in G.I. Blues (1960). During shooting of the film, they had a short and intense romantic fling mirroring the movie plot. "Elvis and I had an affair... We had a sexual attraction like two healthy young people, but he was already a victim of his fans. We always met in his room and never went out," she later described in an interview. Prowse also made a brief cameo appearance a decade later in the Metro-Goldwyn-Mayer documentary film, Elvis: That's the Way It Is (1970) as an interviewed audience member about to attend Elvis Presley's opening night show return as he restarted his concert tours and public appearances schedule after his 1960s feature film-making career lagged. It was held at the International Hotel (now the Westgate Resort & Casino) in Las Vegas on 10 August 1970.

She starred with Denny Scott Miller on her own brief NBC sitcom in the 1965–1966 season: Mona McCluskey, which was produced by George Burns. The series was based on the idea that the couple, Mike and Mona McCluskey, would live on his military salary, rather than her lucrative earnings as an actress.

Prowse also did other feature films, including The Fiercest Heart (1961) and Who Killed Teddy Bear? (1965) with Sal Mineo and Elaine Stritch.