Reuben Rupert Jamieson, also known as Reuben Roper Jamieson, (December 12, 1856 – May 30, 1911) was the 19th mayor of Calgary, Alberta.Jamieson was born in Westover, Ontario and educated in Hamilton, Ontario. His career between 1873 and 1902 was working for various railways. This included the Canadian Pacific Railway, who brought him to Calgary in 1903 as the area general superintendent.In 1908, Jamieson retired from the CPR and entered civic politics.