The Guess Who is a rock band from Winnipeg, Manitoba that was one of the first Canadian groups to establish a major successful following both in their own country as well as abroad. In their late 60s and early 70s heyday, the guys took influence from late period British invasion bands as well as stuck alongside them on the charts. They were notably the first Canadian rock n roll group to have a #1 hit in the United States thanks to the success of 1970's "American Woman".