Sue Mappin (born 7 November 1947) is a former tennis player from Great Britain who was active in the 1960s and 1970s.

In Grand Slam doubles, Mappin made it to the semifinals on three occasions; at the French Open in 1977 and at Wimbledon in 1976 and 1977, each time with compatriot Lesley Charles.

[4] That year, she played half a season for the Indiana Loves in World TeamTennis.

She won the BP New Zealand championships in 1975, defeating Evonne Goolagong in the quarterfinal and doubles partner Charles in the final.

[5] After her retirement as a player in 1978, she joined the Lawn Tennis Association as national women's team manager.