Marnie may refer to:

• Marni, a given name, including a list of people named Marni and Marnie
• Helen Marnie (born 1978), Scottish singer-songwriter known mononymously as Marnie

• 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

• Marnie, West Virginia, an unincorporated community
• Marnie (dog), an American dog made famous through social media

• Marney, a surname

This disambiguation page lists articles associated with the title Marnie.
If an internal link led you here, you may wish to change the link to point directly to the intended article.