The Honourable Herb Breau (born December 5 1944) is a businessman and former politician.

Breau was a Liberal Member of Parliament representing Gloucester, New Brunswick from 1968 until his defeat in the 1984 federal election that reduced the Liberal caucus to only 40 MPs.

Breau served as a parliamentary secretary in the 1970s. He served as chairman of the Parliamentary Task Forces on North-South Relations and on Fiscal Federalism in Canada and was also chairman of the Parliamentary Association of Canada-United States from 1977 to 1981 and a member of the Trilateral Commission from 1981 to 1984.

Breau was appointed to Cabinet as Minister of Fisheries and Oceans when John Turner became Prime Minister of Canada in June 1984 however his ministerial career ended just over two months later as a result of the the election that defeated the Turner government.

He entered the private sector as a result of the end of his political career and has most recently been an executive at Syscan International serving as Acting CEO from 2000 to 2001.

Breau served on the board of governors of the International Development Research Centre (IDRC) in the 1990s as an appointee of the federal government.