William Moore Bell Nanson (12 December 1880 – 4 June 1915) was an English rugby union player.
He gained 2 caps for England, versus France and Wales in the 1907 Home Nations Championship and associated match v France.
He was killed at Gallipoli in the First World War.As well as playing for England, he also played club rugby for Carlisle, and county rugby for Cumbria.