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.

Christine Daaé is a fictional character and the female protagonist of Gaston Leroux's 1910 novel The Phantom of the Opera and of the various adaptations of the work. Erik, the Phantom of the Opera and Viscount Raoul de Chagny both fall in love with her.