Svetloyarsky District () is an administrative district (raion), one of the thirty-three in Volgograd Oblast, Russia. As a municipal division, it is incorporated as Svetloyarsky Municipal District. The area of the district is . Its administrative center is the urban locality (a work settlement) of Svetly Yar. Population: 39,384 (2002 Census); The population of Svetly Yar accounts for 32.7% of the district's total population.
The district is located in the southeast of the oblast, in the area of the Volga Upland and the Yergeni hills.