Warren Fellows (born 13 September 1953) is an Australian former drug courier who was sentenced to life imprisonment in Thailand in 1978 for his role in a heroin trafficking operation that took place from Perth to Bangkok. In his best-selling book The Damage Done, Fellows describes the violence and harsh conditions he experienced in Thailand prisons.
Fellows was born in Sydney, Australia. His father Bill Fellows, was a champion jockey and horse trainer who won the 1949 Melbourne Cup on Foxzami. He was the youngest of three children, but his two-year-old sister Gail, died in 1950 from a "bowel complication". His older brother Gary died when he was 36 years old. Gary was living with his wife Carole and two sons Brett and Rodney. He also had a daughter Kim. Fellows was educated at De La Salle College, a Catholic school for boys in Ashfield, New South Wales. Fellows claims he was nearly expelled from the school when he was caught running a horse betting operation from his school desk. Warren "left" De La Salle College and went to Randwick North High School.
Fellows worked in various jobs, including as a barman and an apprentice hairdresser in Double Bay. It was through his bar work that he first became involved with drug trafficking, successfully importing hash from India with a friend. On his return to Australia he married and had a child. Word got out about the successful drug run and a customer in the bar where Fellows worked employed him to travel to Los Angeles, Hawaii and South America to smuggle cocaine into Australia. Fellows came to know drug dealer William Sinclair, who took him to Bangkok, Thailand where he was introduced to Neddy Smith and made his first successful attempt at smuggling heroin into Australia.