Andrew Sadek (born November 22, 1993; believed to have died shortly after disappearing May 1, 2014), was a 20-year-old student at the North Dakota State College of Science (NDSCS) in Wahpeton, North Dakota, United States. Following an arrest in 2013 for felony charges of selling marijuana that could have led to a long prison sentence, he agreed to work as a confidential informant (CI) for a local multi-jurisdictional law enforcement task force in exchange for having the charges dropped. Under police supervision, he bought more marijuana from other dealers around the NDSCS campus.