Jill Whelan

 is an American actress, singer and radio personality. She appeared in such credits as Airplane!, Trapper John, M.D., The Love Boat and Fantasy Island. After Mark Thompson announced his retirement from the Mark & Brian Show on KLOS, and Brian Phelps also quit, she joined him for a podcast entitled The Brian and Jill Show. Both Dan Povenmire and Jeff "Swampy" Marsh are frequent guests of the podcast.

On Phineas and Ferb, she is credited for providing additional voices for "Druselsteinoween" and will be heard singing "Doofenshmirtz Swanky New Evil Lair" in an upcoming episode.