Joseph Dana Kafer (March 23, 1880 – March 22, 1937) was an American football player. He played college football for the Princeton Tigers football team from 1901 to 1903 and was selected as a consensus All-American at the halfback position in 1903. Kafer sustained a shoulder injury during a football game in October 1901 that kept him out of the lineup for the remainder of the season. He scored three touchdowns in Princeton's 1903 victory over Cornell. He was also a member of the Yale baseball team.