Glen Cook was born in New York City, lived in southern Indiana as a small child, then grew up in Northern California. After high school he served in the U.S. Navy and attended the University of Missouri. He worked for General Motors for 33 years, retiring some years ago. He started writing short stories in 7th grade, had several published in a high school literary magazine. He began writing with malicious intent to publish in 1968, eventually producing 51 books and a number of short fiction pieces.
He met his wife of 43 years while attending the Clarion Writer's Workshop in 1970. He has three sons (army officer, architect, orchestral musician) and numerous grandchildren, all of whom but one are female. He is best known for his Black Company series, which has appeared in 20+ languages worldwide. His other series include Dread Empire and and the Garrett, P.I. series.