Thomas George Bonney (July 27, 1833 - December 10, 1923) was an English geologist.
Bonney was born at Rugeley in Staffordshire, the eldest son of the Reverend Thomas Bonney, master of Rugeley grammar school. He was educated at Uppingham School and St John's College, Cambridge, where he graduated as 12th wrangler in 1856, and was ordained in the following year.
From 1856 to 1861 he was mathematical master at Westminster School, and he pursued geology only as a recreational activity, mainly in Alpine regions. In 1868 he was appointed tutor at St John's College, Cambridge and lecturer in geology. His attention was specially directed to the study of the igneous and metamorphic rocks in Alpine regions and in various parts of England (eg: the Lizard in Cornwall, at Salcombe and in the Charnwood Forest), Wales and the Scottish Highlands.
From 1877 to 1901 he was professor of geology in University College London. He became secretary and later president of the Geological Society (1884-1886), secretary of the British Association (1881-1885), president of the Mineralogical Society and of the Alpine Club. In 1887, Bonney was appointed honorary canon of Manchester.
His purely scientific works are:
Cambridgeshire Geology (1875)
The Story of our Planet (1893)
Charles Lyell and Modern Geology (1895)
Ice Work, Past and Present (1896)
In addition to many papers published in the Quarterly Journal of the Geological Society and Geological Magazine, he wrote several popular works on Alpine Regions, on English and Welsh scenery, as well as on theological subjects.