Supraśl (river)

{{Unreferenced|date=June 2019|bot=noref (GreenC bot)}}

{{Infobox river

| name = Supraśl

| image = Supraśl (river).jpg

| image_caption = Supraśl near village Studzianki

| image_size = 180

| source1_location = near village Topolany

| mouth_location = Narew in Złotoria

| mouth_coordinates = {{coord|53.177590|22.937635|format=dms|display=it|type:landmark}}

| progression = {{RNarew}}

| subdivision_type1 = Country

| subdivision_name1 = Poland

| length = {{convert|93.8|km|abbr=on}}

| source1_elevation = {{convert|110|m|abbr=on}}

| discharge1_avg =

| basin_size = {{convert|1844.4|km2|abbr=on}}

}}

The Supraśl is a river in east Poland in Podlaskie Voivodeship, a tributary of the Narew river (near Złotoria), with a length of 93,8 kilometres and the basin area of 1,844.4 km².

Supraśl is the source of the drinking water for Białystok.