Daniel Phillip Hays PC OC CD (April 24, 1939) is a Canadian politician born in Calgary, Alberta. He was Speaker of the Senate of Canada from 2001 to 2006, when he became Leader of the Government (Liberal) in the Senate. Hays was the Leader of the Opposition in the 39th Canadian Parliament (2006-2007), and chair of numerous Senate committees. He is the only child of Muriel and Harry Hays, who served as Minister of Agriculture in the government of Prime Minister Lester B. Pearson. Dan Hays married Kathy in 2001. He has three daughters from his previous marriage.