Rosemary's Baby may refer to:

• Rosemary's Baby (novel), a 1967 horror novel by Ira Levin
  • Rosemary's Baby (film), a 1968 horror film based on the novel
    • Look What's Happened to Rosemary's Baby, a 1976 made-for-television sequel film
  • Rosemary's Baby (miniseries), a 2014 horror television miniseries based on the novel
• "Rosemary's Baby" (30 Rock), an episode of the television series 30 Rock