Marina Prior is an Australian soprano and actress with a career mainly in musical theatre. From 1990 to 1993, she starred as the original Christine Daaé in the Australian premiere of The Phantom of the Opera, opposite Anthony Warlow and later Rob Guest.

The Witches of Eastwick is a 2000 musical based on the 1984 novel of the same name by John Updike. It was adapted by John Dempsey and Dana P. Rowe (music), directed by Eric Schaeffer, and produced by Cameron Mackintosh.