Valka is a town and municipality in northern Latvia, on the border with Estonia along both banks of the river Pedele.

Valga is a town in southern Estonia and the capital of Valga County and Valga Parish. Until their separation in 1920, Valga and the town of Valka in northern Latvia were one town. They are now twin-towns. The area of Valga is 16.5 square kilometres and that of Valka is 14.2 km2 (5.5 sq mi). Their populations are respectively 12,261 and 6,164. On 21 December 2007 all border-crossing points were removed and roads and fences opened between the two countries with both countries joining the Schengen Agreement.