James Langstaff Bowman, PC (October 6, 1879 – September 14, 1951) was the first Speaker of the House of Commons of Canada from Manitoba. Bowman had been a teacher and lawyer in Dauphin, Manitoba. In 1917, he became the town's mayor. He ran unsuccessfully in the 1925 and 1926 general elections for the Conservative Party. He finally winning a seat in the 1930 election that brought R.B. Bennett to power. 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.