The Tammy movies are a series of four light-hearted American films about a naive 17-year-old girl from Mississippi, produced by Universal between 1957 and 1967 and based on the character created in Cid Ricketts Sumner's 1948 book Tammy out of Time.

The main character of the films is Tambrey "Tammy" Tyree, portrayed as a kind, sweet and polite country girl looking for romantic love. Some elements common to each film are: Tammy falling in love; Tammy singing about being in love; Tammy being hurt by sophisticated city folk; city folk learning something from Tammy; Tammy "puckering up" and then comparing the kiss with her first kiss; Tammy praying to God and talking to her grandmother; Tammy quoting from the Bible; and Tammy relating the wisdom of her grandfather, a lay preacher and moonshiner. Tammy's speech is stereotypical of dialects of the rural Deep South. Although Tammy is very unworldly and has little formal education, she possesses considerable natural intelligence and determination, which help to bring about happy endings to each of her tales.

The films formed the basis of a later television series, simply called Tammy.