| Baba Lewis | |
| Fullname: | Mercedes Johnson Lewis (nee Madden) |
| Birth Date: | 27 April 1920 |
| Height: | 5 ft 2 in |
| Plays: | Right-handed |
| Frenchopenresult: | 3R (1954) |
| Wimbledonresult: | 4R (1953) |
| Usopenresult: | QF (1952) |
| Frenchopendoublesresult: | QF (1954) |
Mercedes Johnson Madden "Baba" Lewis (April 27, 1920 — September 23, 1998) was an American tennis player.
Lewis, a quick and nimble player, was a native of Massachusetts who was active on tour in the 1940s and 1950s.[1] She twice won the singles title at the Canadian Championships, including in 1946 when her then husband Morey Lewis was champion in the men's singles.[2] In 1952 she made the singles quarter-finals of the U.S. National Championships, losing to Shirley Fry.[3] She attained her top national ranking of eight in 1952.[4] In addition to tennis she was also nationally ranked in the sport of squash and was the top ranked player in New England for several years.[5]