Ellen Wong (born 1984 or 1985) is a Canadian actress. Her first role was on the award winning television series "This is Wonderland." She is known for her role as Knives Chau in the 2010 film Scott Pilgrim vs. the World. She also appeared in the TV show Unnatural History. In January 2012, she was nominated for an ACTRA Award for Outstanding Performance in the short film Silent Cargo.