The Cambridgeshire Militia was an auxiliary military regiment in the English county of Cambridgeshire and the Isle of Ely. From their formal organisation as Trained Bands and their service during the Armada Crisis and in the English Civil Wars, the Militia of Cambridgeshire served during times of international tension and all of Britain's major wars. The regiment provided internal security and home defence but sometimes operated further afield, relieving regular troops from routine garrison duties and acting as a source of trained officers and men for the British Army. It later became a battalion of the Suffolk Regiment until its final disbandment in 1908.

Charles Philip Yorke was a British politician. He notably served as Home Secretary from 1803 to 1804.