Mary Jane Farell (March 12, 1920 – 5 October 2015), also known as Mary Jane Kauder, was an American bridge player. Farell grew up in Cincinnati, Ohio, and "couldn't wait to get home from school to kibitz whenever my mother had the game at our house." The family moved to Los Angeles when she was 17 and she began playing duplicate bridge there "with the young men I dated". She married one of them, Arnold Kauder, who was her mentor. (They divorced.) She began teaching bridge after World War II. Her second husband Jules Farell died in 2005. Farell was inducted into the ACBL Hall of Fame in 1998.