Mary Poppins may refer to:

• Mary Poppins (character), a nanny with magical powers
• Mary Poppins (franchise), based on the fictional nanny
  • Mary Poppins (book series), the original 1934–1988 children's fantasy novels that introduced the character
  • Mary Poppins (film), a 1964 Disney film starring Julie Andrews, based on the books.
    • Mary Poppins: Original Cast Soundtrack, the soundtrack album for the 1964 film.
  • Mary Poppins (musical), a 2004 British stage musical based on the books and film.

• All pages with titles containing Mary Poppins
• All pages with titles beginning with Mary Poppins
• Mary Poppins, or MAPO (US patent 3,973,746), the moving blocklight system that maintains spacing on Disney World monorail trains