Colonel Sir (Alexander) Weston Jarvis, CMG, MVO, TD (26 December 1855 – 31 October 1939) was a British Conservative Party politician and officer in the British Army. He served in the Matabele Rebellion, Boer War and First World War. He was the elder son of Lewis Whincop Jarvis and the former Emma Bowker; his father ran Jarvis & Jarvis, a local bank in King's Lynn which later became part of the Barclays Bank group. He was educated at Harrow School. His younger brother Lewis Jarvis was also a banker and was an all-round athlete and first-class cricketer.