Brenda Kay Chamberlain, PC (born April 9, 1952) was a member of the House of Commons of Canada, representing the riding of Guelph for the Liberal Party from 1993 until her resignation as of April, 2008. Chamberlain was re-elected by greater margins in the elections of 1997 and 2000. For many years, she was known as a strong supporter of Paul Martin in his bid to succeed Jean Chrétien as leader of the Liberal Party. Chamberlain won another easy victory in the election of 2004, defeating her Conservative opponent by nearly 10,000 votes in the redistributed riding of Guelph.