Dina Spybey (born August 29, 1965) is an American actress, known as Dina Waters since her 2000 wedding to director Mark Waters. She has appeared in more than 20 films, including John Q., subUrbia and The Haunted Mansion. She is perhaps best known for her role as Tracy Montrose Blair on the first season of Six Feet Under.

She was in Greg the Bunny, and Remember WENN, and also played a stripper colleague of Demi Moore's in Striptease. She played a large supporting role in husband Mark Waters' film Just Like Heaven (2005), which starred Reese Witherspoon, Mark Ruffalo, and Jon Heder. She also had a small role in Waters' Freaky Friday.