Emilie de Ravin (born December 27, 1981) is an Australian actress who is best known for her roles as Tess Harding on The WB/UPN science fiction teen drama series Roswell from 1999 to 2002 and as Claire Littleton on the ABC television series Lost from 2004 to 2010.

She portrayed the role of Belle/Lacey French on the ABC fantasy-drama series Once Upon a Time from 2012 to 2017.