Joanna Kerns (born Joanna Cruise DeVarona on February 12, 1953) is an American actress best known as Maggie Seaver on ABC's 1980s sitcom Growing Pains opposite Alan Thicke and Kirk Cameron.

She has appeared in numerous made-for-tv movies and has directed episodes of television shows such as Dawson's Creek. She also directed episodes of the NBC TV series Titans with Yasmine Bleeth in 2000.

She is the younger sister of Olympic swimmer Donna DeVarona, and is of Mexican and Irish extraction.

She is not related to actress Sandra Kerns.