Susan Howlet Butcher (December 26, 1954 – August 5, 2006) was an American dog musher, noteworthy as the second woman to win the Iditarod Trail Sled Dog Race in 1986, the second four-time winner in 1990, and the first to win four out of five sequential years. She is commemorated in Alaska by the Susan Butcher Day.
Susan Butcher was born in Cambridge, Massachusetts, a lover of dogs and the outdoors. When she was young her parents divorced. Her brother died of leukemia at a young age. She studied at Colorado State University and ultimately became a veterinary technician.
To pursue her love of dogsled racing and breeding huskies, she moved to the Wrangell Mountains area of Alaska.