Keegan Connor Tracy (born Tracy Armstrong; December 3, 1971) is a Canadian actress who is best known for her roles as Kat Jennings in the 2003 supernatural horror film Final Destination 2 and as Miss Watson on the A&E thriller drama series Bates Motel in 2013.

She is also best known for her role as The Blue Fairy/Mother Superior on the ABC fantasy-drama series Once Upon a Time from 2011 to 2014. She also played Belle in Descendants.

She also played Shelia in Duets and Mandy in the Miramax film 40 Days and 40 Nights.