Colin Gurden Forbes Adam CSI DL (18 December 1889 – 12 November 1982) was a British civil servant in the Indian Civil Service.
His older brothers were General Sir Ronald Forbes Adam, 2nd Baronet GCB DSO OBE and Eric Forbes Adam CMG.
He was educated at Eton and King's College, Cambridge.
During the First World War he served as an officer with the Indian Expeditionary Force to Mesopotamia and Palestine.
Irene Constance Lawley, only child of Beilby Lawley, 3rd Baron Wenlock; they had three sons and a daughter: Adam was appointed a Companion of the Order of the Star of India in 1924.