Nicole de Boer (born December 20, 1970 in Toronto, Ontario) is a Canadian actress, best known for her role as Ezri Dax on Star Trek: Deep Space Nine. De Boer currently appears on the television series The Dead Zone.
Her first major TV role came in 1997, in the short-lived Sci-Fi Channel series Deepwater Black (also known as Mission Genesis) as Yuna. She followed that up with a role in the low-budget science fiction film, Cube (1997). She has also been featured in episodes of the Canadian produced SF series The Outer Limits.
De Boer's most noted role is that of Ezri Dax on Star Trek: Deep Space Nine (seventh season, 1999), and she currently stars as Sarah Bannerman in the television series The Dead Zone.