Eve Plumb (born April 29, 1958) is an American actress. She won the role of Jan Brady in the television sitcom The Brady Bunch in 1969. Jan was the middle child and often had a jealous streak in her when it came to her older sister Marcia. Plumb played Jan until 1974 and didn't return for the Brady Bunch Variety Show. She did appear in the Brady made-for-TV movies that followed. She also appeared in the Saturday morning sitcom "Fudge" (1995-1997) as Mrs. Ann Thatcher and the movie "Fudge-a-Mania (1997). source IMDB.