Eve Aline Plumb (born April 29, 1958) is an American actress, singer and painter. She is best known for portraying the middle daughter Jan Brady on the ABC sitcom The Brady Bunch.

A native of Southern California, Plumb began appearing in commercials at age seven, and also had guest roles on the televisions series Family Affair, The Big Valley and The Virginian between 1966 and 1967. She was cast as Jan Brady on The Brady Bunch in 1969, and portrayed the role until the series' end in 1974. After, Plumb continued to work in television, portraying a teenage prostitute in the NBC television film Dawn: Portrait of a Teenage Runaway (1976), and as Elizabeth March in the 1978 miniseries Little Women.