Trunovsky District () is an administrative district (raion), one of the twenty-six in Stavropol Krai, Russia. Municipally, it is incorporated as Trunovsky Municipal District. It is located in the northwest of the krai. The area of the district is . Its administrative center is the rural locality (a selo) of Donskoye. Population: 35,403 (2002 Census); 32,093 (1989 Census). The population of Donskoye accounts for 43.2% of the district's total population.