Bowman Brown Law (July 29, 1855 – February 3, 1916) was a Canadian politician.

Born in Douglas, Massachusetts, United States, the son of William and Mary Law, the father of Irish and the mother of American descent, Law was brought to Yarmouth, Nova Scotia by his parents when he was young.

A merchant, he was first elected to the House of Commons of Canada for Yarmouth in a 1902 by-election held on December 3, 1902 when the sitting MP, Thomas Barnard Flint, was appointed Clerk of the House of Commons.

He died in the fire that destroyed the Parliament building in Ottawa on February 3, 1916.

On Mr. Flint being appointed Clerk of the House of Commons, 11 November 1902