Karen Susman (née Hantze; born December 11, 1942, San Diego)[1][2] is a retired female tennis player from the United States.

Susman and Moffitt successfully defended their title in 1962, defeating the South African team of Renée Schuurman and Sandra Reynolds in the final 5–7, 6–3, 7–5.

Susman and Moffitt reached the 1964 women's doubles final at Wimbledon, losing to the top-seeded team of Smith and Lesley Turner 7–5, 6–2.

Susman and Moffitt reached the 1962 women's doubles final at the U.S. Championships, losing to the team of Maria Bueno and Darlene Hard 4–6, 6–3, 6–2.

Susman gave birth to her only child in October 1963[3] and played very little in 1963, deciding not to defend her Wimbledon singles and doubles titles.