Dina Spybey (born August 29, 1965) is an American actress, also known as Dina Waters or Dina Spybey-Waters since her 2000 marriage to director Mark Waters. She has appeared in more than 20 films, including Big Night (1996), Striptease (1996), The First Wives Club (1996), SubUrbia (1996), John Q (2002), Freaky Friday (2003), The Haunted Mansion (2003), and Just Like Heaven (2005).

On television, Spybey is perhaps best known for her role as Tracy Montrose Blair on the first season of Six Feet Under. She also had regular roles on Remember WENN (1996), Men Behaving Badly (1996 - 1997), and Greg the Bunny (2002 - 2004). A notable guest role was on Frasier in 2001 as Nanette Guzman, Frasier Crane's first wife. She was one of three actresses to play the role over the course of Cheers and Frasier (the others were Emma Thompson and Laurie Metcalf). She attended Winterset Elementary, Ridgeview Jr. High School, Centennial High School, and The Ohio State University, all in Columbus, Ohio.