Tommy Lynn Sells was an American serial killer. He was convicted of one murder for which he was sentenced to death, and authorities believe he committed at least another 21 murders.

Sells is believed by police to have murdered at least 22 people. Retired Texas Ranger John Allen said, "We did confirm 22... I know there's more. I know there's a lot more. Obviously, we won't ever know. Sells said he committed his first murder at age 16, while breaking into a house. While in the house, Sells discovered a man performing fellatio on a young boy. Sells killed the man in a fit of rage.

In July 1985, 21-year-old Sells worked at a Forsyth, Missouri carnival, where he met 28-year-old Ena Cordt and her 4-year-old son. Cordt invited Sells to her home that evening. According to Sells, he had sex with her, fell asleep, and awoke to find her stealing from his backpack. He proceeded to beat Cordt to death with her son's baseball bat. He then murdered her son because the child was a potential witness. The bludgeoned bodies were found three days later, by which time Sells had left town.

The State of Texas executed Tommy Lynn Sells on April 3, 2014, for the 1999 murder of Kaylene Jo "Katy" Harris.

4" X 7" cut out from an adult magazine which Sells has signed in full.