Tulunsky District () is an administrative district, one of the thirty-three in Irkutsk Oblast, Russia. Municipally, it is incorporated as Tulunsky Municipal District. The area of the district is . Its administrative center is the town of Tulun (which is not administratively a part of the district). Population: 29,495 (2002 Census);
Within the framework of administrative divisions, Tulunsky District is one of the thirty-three in the oblast. The town of Tulun serves as its administrative center, despite being incorporated separately as an administrative unit with the status equal to that of the districts.
As a municipal division, the district is incorporated as Tulunsky Municipal District. The Town of Tulun is incorporated separately from the district as Tulun Urban Okrug.