Elisabeth Rose Harnois (born May 26, 1979) is an American actress who is best known for her role as Morgan Brody on the CBS crime drama series CSI: Crime Scene Investigation from 2011 to 2015.

She portrayed Alice on the Disney Channel live-action musical series Adventures in Wonderland and voiced Ki in the 2011 disney motion capture animated film Mars Needs Moms. She also portrayed Abbie Grainger in One Magic Christmas, Trish Davenport/Cheryl Davenport in the CBS/ABC Studios TV show Criminal Minds, Missy Robinson in Boy Meets World, Sarah Livingston in the ABC TV show All My Children, Milan Carlton in the ABC Studios TV show Dirt, and Hallie Richmond in the 1998 television film My Date with the President's Daughter.