Nesbitt, Thomson and Company was a Canadian stock brokerage firm that was founded in 1912 by Arthur J. Nesbitt and Peter A. T. Thomson. The firm was headquartered on St. James Street in Montreal, Quebec.^[1]

In 1987, Nesbitt Thomson was acquired by the Bank of Montreal, with Brian J. Steck appointed as President and CEO.^{[citation needed]}

In 1994, the firm was merged with Burns Fry Ltd. to create the Nesbitt Burns Inc. entity now operating as BMO Capital Markets and BMO Nesbitt Burns, both wholly-owned subsidiaries of the Bank of Montreal Financial Group.^{[citation needed]}