Caroline Gilchrist Rhea is a Canadian stand-up comedian and actress who was the original host of the reality television show The Biggest Loser on NBC until she was replaced by Alison Sweeney after the end of the third season. She is also known for her role as Hilda Spellman from Sabrina, the Teenage Witch, and for replacing Rosie O'Donnell as the hostess of her syndicated talk show, renamed The Caroline Rhea Show. Rhea provides the voice for Linda Flynn-Fletcher, the mother of Phineas and Candace Flynn and stepmother of Ferb Fletcher, on the Disney Channel series Phineas and Ferb.
- Born: April 13, 1964 (age 53), Montreal
- Spouse: Costaki Economopoulos
- Aliases: Caroline Gilchrist Rhea, Cathy
- Children: Ava Rhea Economopoulos
- Height: 5′ 8″ (1.727m)
- Websites: http://www.carolinerhea.com/