Colleen Atwood (born September 25, 1948) is an American costume designer.

Atwood has been nominated for the Academy Award for Best Costume Design twelve times, winning four times - for the films Chicago (2002), Memoirs of a Geisha (2005), Alice in Wonderland (2010), and Fantastic Beasts and Where to Find Them (2016); the latter is the first Wizarding World film to win an Academy Award. She has collaborated several times with directors Tim Burton, Rob Marshall and Jonathan Demme.