Muonionjoki

Muonio (Muonionjoki, Muonio älv, Muonioälven)
River
Muonio River in mid-July 2003
Countries	Sweden, Finland
Source
- coordinates	68°29′04″N 22°17′45″E / 68.48444°N 22.29583°E / 68.48444; 22.29583
Mouth	Torne River
- coordinates	67°10′51″N 23°33′30″E / 67.18083°N 23.55833°E / 67.18083; 23.55833Coordinates: 67°10′51″N 23°33′30″E / 67.18083°N 23.55833°E / 67.18083; 23.55833
Length	387 km (240 mi)
Basin	14,430 km2 (5,571 sq mi)
Discharge
- average	165 m3/s (5,827 cu ft/s)

The Muonio (Finnish: Muonionjoki; Swedish: Muonio älv) is a river in northern Finland and Sweden. It is a tributary of the Tornio. Together the two rivers form the national border between Finland and Sweden. The river is 230 kilometres long.