William St John Harding (1 January 1835 – 26 December 1903) was a member of the Queensland Legislative Assembly.

[2] On arrival in Queensland he acquired grazing farms and was the licensee for the Mt Cornish Hotel in Muttaburra as well as the Emu Park Hotel.

He was married to Catherine Berry in Roma in 1871 and died in Rockhampton on Boxing Day, 1903 and buried in the South Rockhampton Cemetery.

[3] Harding, an Independent, won the seat of Rockhampton North at the 1893 Queensland colonial election.

He held it for one term, losing at the 1896 Queensland colonial election.