Gabrielle Walsh is an American actor best known for her lead role in the international feature horror film, Paranormal Activity: The Marked Ones. On television, Walsh starred in award-winning shows such as The Flash, Shameless, 9-1-1, The Vampire Diaries and East Los High. Other credits include Star, Making Moves, Agent X, Dusk till Dawn: The Series, The Brave and Small Shots.

A Chicago native, Walsh attended Northern Illinois University, where she spent a semester abroad in Russia at the Moscow Art Theater School and received her Bachelor of Fine Arts in acting. She currently resides in Los Angeles.