William John Hamilton FRS (5 July 1805 – 27 June 1867) was a British geologist who served as a Conservative Member of Parliament.
He was the eldest son of William Richard Hamilton, FRS, and the former Julia Udny.
His younger brothers were Alexander Edmund Hamilton (who drowned in India in 1827),[1] Capt.
In 1835 he made a geological tour of the Levant with Hugh Edwin Strickland, continuing on his own through Armenia and across Asia Minor.
[7] He made excursions in France and Belgium and wrote on the rocks and minerals of Tuscany, the agate quarries of Oberstein, and on the geology of the Mayence basin and the Hesse-Kassel (or Hesse-Cassel) district.