The Kolari railway (Finnish: Kolarin rata) is the northernmost railway in Finland and goes between Tornio and Kolari. It is 186 km (116 mi) long. The railway is not electrified and it has Finnish broad gauge. It connects to the Oulu–Tornio railway in Tornio.
It was built in 1928 the first 79 kilometres (49 mi) Tornio–Kaulinranta and in 1967 the remaining 123 kilometres (76 mi) to Kolari. There are two mine railways, both 20 kilometres (12 mi), north of Kolari to the mines of Rautuvaara and Äkäsjokisuu. These mines were the primary reason to extend the railway north of Kaulinranta. There were in 2009-2010 short term plans to extend the railway 15 kilometres (9.3 mi) from Äkäsjokisuu to the new Tapuli mine in Sweden, but the mining company decided to use Narvik as shipping port instead.