Greatest Hits is the third greatest hits compilation by American singer-actress Cher, released in October 1974 by MCA Records. The album was released to close Cher's contract with MCA, her record company since 1971. This release follows the greatest hits albums Golden Greats (1968) and Superpack (1972). The album peaked at 152 on the Billboard 200 chart.
Billboard highlighted that Cher is "a fine singer" and "has proven one of the most consistent hitmakers", with songs that "are not only good but which vary from rock to ballads to that vague in-between". Cash Box wrote that the album is "a collection that really demonstrates how much Cher has meant to the industry and the millions of fans". According to Robert Christgau, Cher's "biggest hits [are] irresistible" and that she is "at least as authentic as Tammy Wynette". He highlighted the "great Swarthy Trilogy" ("Gypsys, Tramps & Thieves", "Half-Breed", and "Dark Lady") as proof of a collection "as vulgar as any in the post-Beatles era".
In a retrospective review Stephen Thomas Erlewine of AllMusic wrote that the compilation "does have all the signature songs in one place", which "may be enough for many listeners", despite being "not the most logical sequencing in the world".