Wiliam A. Cann (1882–1958) was an Australian rugby league footballer who played in the 1900s who later wrote for The Sydney Morning Herald. A New South Wales state and Australia national representative lock forward, he has been named as one of the nation's finest footballers of the 20th century. Cann played his club football for South Sydney with whom he won the 1914 NSWRFL Premiership. In 1907 he played for New South Wales in the very first rugby match run by the newly created 'New South Wales Rugby Football League' which had just split away from the established New South Wales Rugby Football Union. Cann was also a long-term administrator at Souths and a football journalist.