Major-General George Dean-Pitt, KH^[1] (1781^[2] or 1772^[3][4] – 8 January 1851) was Lieutenant-Governor of the former New Zealand Province of New Ulster from 14 February 1848 to his death on 8 January 1851.^[2]

He was born George Dean, the illegitimate son of George Pitt, 2nd Baron Rivers.^[5]

During his military career before arriving in New Zealand, Dean-Pitt, at the time a Major, was stationed (January – September 1828) at Malta with the 80th Regiment of Foot (Staffordshire Volunteers).^[6]

Dean-Pitt arrived with his family on the barque Minerva at Auckland on 8 October 1847.^[3] He was the second most important military man in the new colony during the governorship of George Grey. His son and two of his sons-in-law were part of the military establishment as well. His residence was located in Pitt Street, which had originally been called Pyt Street after a childhood home of the first governor William Hobson, it is likely the spelling changed because of Dean Pitt's presence.

Ill for some time, he died on 8 January 1851 while Lieutenant-Governor and was buried with full military honours in the Symonds Street Cemetery in Auckland. A number of retail businesses in Auckland closed for the day of his funeral.^[7]

In 1818 he married Susan Baillie (1797–1875) in Bristol, England.^{[citation needed]} In 1819 he adopted the surname Dean-Pitt by Royal Licence.^{[citation needed]}