General Sir Duncan Alexander Cameron, GCB (20 May 1808 – 8 June 1888) was a British Army officer who fought in the Crimean War and part of the New Zealand Wars. He was later a governor of the Royal Military College, Sandhurst. In 1868, Cameron was made a lieutenant-general and was appointed as governor of the Royal Military College at Sandhurst. He remained in this post until 1875, at which time he retired from military service with the rank of general and as a Knight Grand Cross of the Order of the Bath. He died in 1888 at the age of 80.