Keegan Connor Tracy (born December 3, 1971) is a Canadian actress and author. She is best known for her roles as Audrey Malone in the Showtime comedy-drama series Beggars and Choosers (1999–2000), the Blue Fairy in the ABC fantasy drama series Once Upon a Time (2011–18), Miss Blair Watson in the A&E drama series Bates Motel (2013–16), and Professor Lipson in the Syfy fantasy series The Magicians (2016–2020). Tracy's other notable work includes roles on the television series Jake 2.0, The 4400, Stargate SG-1, Supernatural, Psych, and Battlestar Galactica.

In film, she is best known for her roles as Kat Jennings in the supernatural horror film Final Destination 2 (2003), Mirabelle Keegan in the supernatural horror film White Noise (2005), Dolly Dupuyster in the comedy-drama film The Women (2008), Ellen in the drama film Words and Pictures (2013), and Queen Belle in the musical fantasy films Descendants (2015), Descendants 2 (2017), and Descendants 3 (2019).