Marnie may refer to:
People Marni, a given name, including a list of people named Marni and Marnie Helen Marnie (born 1978), Scottish singer-songwriter known mononymously as Marnie
Arts and entertainment Marnie (novel), a 1961 novel by Winston Graham Marnie (film), a 1964 adaptation of the novel directed by Alfred Hitchcock Marnie (opera), a 2017 opera by Nico Muhly The title character in When Marnie Was There, a Japanese anime film written and directed by Hiromasa Yonebayashi Marnie Marie Michaels, a character in the HBO series Girls Marnie Nightingale, a character in UK soap opera Hollyoaks Marnie Piper, the protagonist in the Halloweentown series, fantasy horror TV films that aired on Disney Channel Marnie, a character from Pokémon Sword and Shield
Other uses Marnie, West Virginia, an unincorporated community Marnie (dog), an American dog made famous through social media
See also Marney, a surname