Leonid Petrovich Telyatnikov (; 25 January 1951 – 2 December 2004) was the head of the fire department at the Chernobyl Nuclear Power Plant and led the team of firefighters to the fire at reactor number 4 which became the Chernobyl disaster. Despite the radiological dangers, they had no radiation suits, no respirators, and no working dosimeters. From results of a blood test it was estimated he received 4 grays of radiation.