The Gurnos house fire was an arson attack that occurred on the Gurnos housing estate in Merthyr Tydfil, South Wales, on 11 October 1995, resulting in the deaths of three people. The victims were Diane Jones, a 21-year-old mother-of-two, and her daughters, Shauna, 2, and Sarah-Jane, 13 months. As of October 2025, the case remains unsolved.