The Odd Couple is a play by Neil Simon. Following its premiere on Broadway in 1965, the characters were revived in a successful 1968 film and 1970s television series, as well as several other derivative works and spin-offs. The plot concerns two mismatched roommates: the neat, uptight Felix Ungar and the slovenly, easygoing Oscar Madison. Simon adapted the play in 1985 to feature a pair of female roommates in The Female Odd Couple. An updated version of the 1965 show appeared in 2002 with the title Oscar and Felix: A New Look at the Odd Couple.

Marvin Neil Simon was an American playwright, screenwriter and author. He wrote more than 30 plays and nearly the same number of movie screenplays, mostly film adaptations of his plays. He received three Tony Awards and a Golden Globe Award, as well as nominations for four Academy Awards and four Primetime Emmy Awards. He was awarded a Special Tony Award in 1975, the Kennedy Center Honors in 1995 and the Mark Twain Prize for American Humor in 2006.