Brian Topp (born July 4, 1960) is a Canadian political strategist, union leader, and writer and was formerly chief of staff to former Alberta Premier Rachel Notley. He was the runner-up for the federal leadership of the New Democratic Party during its 2012 leadership vote, finishing behind Tom Mulcair. He has been president of the federal New Democratic Party, and was the Director of Information Services at ACTRA (the Alliance of Canadian Cinema, Television and Radio Artists) and the Executive Director and CEO of ACTRA Toronto. He also served as deputy chief of staff to Saskatchewan Premier Roy Romanow.