The execution of Alan Eugene Miller (January 20, 1965 – September 26, 2024) took place in the U.S. state of Alabama by nitrogen hypoxia.

[3] On August 5, 1999, Miller, armed with a .40-caliber Glock pistol,[4] shot and killed two of his co-workers, 32-year-old Lee Holdbrooks and 28-year-old Christopher Yancy, at a heating and air-conditioning distributor, then drove five miles to a business where he had previously worked and shot and killed his former supervisor, 39-year-old Terry Jarvis.

[8] According to trial testimony, Miller's supposed motive behind the murders was that he believed the men were spreading rumors about him being gay.

[12] In November 2022, the state of Alabama agreed it would not use lethal injection to execute Miller and would instead use nitrogen gas.

[2][16][17] According to witness Lauren Gill, "Miller visibly struggled for roughly two minutes, shaking and pulling at his restraints.