James Langstaff Bowman, PC (October 6, 1879 – September 14, 1951) was the first Speaker of the House of Commons of Canada from Manitoba.
He became Speaker after his predecessor, George Black, suffered a nervous breakdown in the summer of 1934, and was unfit to preside when the House of Commons of Canada reconvened in January 1935.
But when the 1935 general election was held in the fall, Bowman lost his seat by a large margin.
He returned to his law practice in Dauphin and failed in his attempt to regain his seat in the 1940 election.
James Bowman was named to the team that represented the Manitoba Curling Association at the 1932 Winter Olympics.