Caroline Gilchrist Rhea (/ˈreɪ/; born April 13, 1964) is a Canadian actress and stand-up comedian, who is best known for her role as Linda Flynn-Fletcher, Betty Jo Flynn and additional voices from the Disney animated series Phineas and Ferb and Hilda Spellman on the ABC series Sabrina the Teenage Witch.

She has performed numerous comedy specials, including three one-hour standup specials for HBO, Showtime, and Bravo. She is also known as a regular on Hollywood Squares with her friend Whoopi Goldberg. Rhea was chosen by Rosie O'Donnell as the new hostess of her syndicated talk show (renamed The Caroline Rhea Show) and hosted the reality television show The Biggest Loser on NBC for the first three seasons. She appeared regularly on ABC's Match Game with Alec Baldwin from 2016 to 2020. She would return to Disney Channel on the series Sydney to the Max, playing the role of Grandma Judy.

Early life
Rhea was born and raised in Westmount, Quebec, the daughter of Margery and David Rhea, an obstetrician and gynecologist, respectively. She has two sisters, Cynthia and Celia. She attended The Study, an all-girls private school in Westmount, Quebec; Dalhousie University in Nova Scotia; and the University of Arizona.