林巴济县（Limbažu rajons、俄语：Лимбажский район）是拉脱维亚北部的一个县，西临里加湾。面积2,580平方公里。人口38,012人。县治林巴济。下分5市15村。

Limbaži District (Latvian:Limbažu rajons) was an administrative division of Latvia, located in Vidzeme region, in the country's north-east, on the shore of the Baltic Sea. It bordered Estonia in the north, the former districts of Riga in the south and Valmiera in the east, and the Gulf of Riga in the west. It covered the territory of the medieval Livonian county of Metsepole. The main city in the district was Limbaži.