Frances Rose McIver (born 10 October 1988) is a New Zealand actress currently working and living in the United States. Her major feature film debut was in The Lovely Bones (2009); other works include the films The Piano and Blinder, as well as guest roles in the New Zealand series Xena: Warrior Princess, Hercules: The Legendary Journeys and Legend of the Seeker.

McIver was a regular cast member on Power Rangers RPM, and has also had recurring roles on the Showtime series Masters of Sex and on the ABC series Once Upon a Time as Ariel. Since March 2015 she has starred in The CW series iZombie as medical examiner Olivia "Liv" Moore.