Põhimaantee 3 (officially abbreviated as T3) is a 220-kilometre-long north-south national main road in Estonia. The route follows the same path as the European route E264. The highway starts in Jõhvi. From there the main cities passed are Ahtme (administratively Kohtla-Järve) and Tartu. The highway ends in Valga on the intersection with the T6.