The Guess Who is a Canadian rock band from Winnipeg, Manitoba, that was one of the first to establish a major successful following in their own country while still residing there. Produced by Jack Richardson, C.M., they were the first Canadian rock group to have a No.1 hit in the United States (see 1970 in music).

The Guess Who was a Canadian rock music band from Winnipeg, Manitoba that was one of the first to establish a major successful following in their own country as well as abroad in the late 1960s and early 1970s. They were the first Canadian rock group to have a No.1 hit in the United States (“American Woman,” 1970). The band evolved out of Chad Allan and the Impressions (also shortened to The Impressions ), a British Invasion styled band fronted by Chad Allan and featuring guitarist Randy Bac