里加县 （Rīgas rajons）是拉脱维亚的一个县，位于该国中部里加湾岸。面积3,058 平方公里，人口159,247人。两个直辖市，包括县治里加 （同时是该国首都）和尤尔马拉皆不在县的管辖范围内。下设8市17村。

Riga District (Latvian:Rīgas rajons) was an administrative division of Latvia, located in Semigallia and Vidzeme regions, in the centre of the country. The district had the two cities of Riga and Jūrmala with the Gulf of Riga to the north. Beginning from the west and counterclockwise to the east, Riga District had Tukums, Jelgava, Bauska, Ogre, Cēsis and Limbaži former districts as neighbours. The area of the district was 3,058 km² with a population of 159,247.