Lauren Ann Chapin (born May 23, 1945) is an American former child actress who played the role of the youngest child "Kathy Anderson" (nicknamed "Kitten") in the television show Father Knows Best,[1] between 1954 and 1960.

Two of her older brothers were also child stars, Billy and Michael Chapin.

Chapin had roles in A Star is Born (1954), The Bob Hope Show (1954), The Ed Sullivan Show (1958), The Adventures of Don Quixote and Sancho Panza (1976), Scout's Honor (1980), The 36th Prime Time Emmy Awards (1984), and School Bus Diaries (2016).

In the early 1980s, Chapin taught natural childbirth and worked for a brokerage firm.

She later owned two beauty pageant enterprises and helped manage and start the career of Jennifer Love Hewitt.