Look What's Happened to Rosemary's Baby (also known as Rosemary's Baby Part II) is a 1976 American made-for-television horror film, which serves as the sequel to Roman Polanski's 1968 film Rosemary's Baby, and the second installment in the franchise of the same name. The movie stars Stephen McHattie, Patty Duke, George Maharis, Ruth Gordon, Ray Milland and Tina Louise; premiering as the ABC Friday Night Movie on October 29, 1976.

It has little connection to the 1967 novel by Ira Levin, on which the first film was based. It is not related to Levin's 1997 sequel novel, Son of Rosemary, although there are some similarities (e.g. the child in both stories is called Andrew/Andy).

The only actor to return from the first film is Ruth Gordon as Minnie Castevet. Sam O'Steen, an editor on the first movie, directed this sequel. Patty Duke, who plays Rosemary, was considered for the role in the 1968 film that ultimately went to Mia Farrow.

The film follows Andrew "Adrian" Woodhouse from the age of 8 to the birth of his own first child. The would-be Antichrist finds himself constantly manipulated by members of his family and by a newfound love interest.