Janet Rachael Margaret Morgan (later known by her married name, Janet Shardlow) (1921–1990) was an English squash player who dominated the game in the 1950s. She won the British Open on ten consecutive occasions and was the sport's most famous player until the rise of Heather McKay. Morgan also competed as a tennis player in the Wimbledon Championships from 1946 until 1957. In the singles event her best result was reaching the third round on four occasions (1946, 1947, 1954 and 1955).