Thon (river)

{{Expand French|Thon (rivière)|date=March 2011|topic=geo}}

{{Infobox river

| name = Thon

| map = Ton (rivière).png

| mouth_location = Oise

| mouth_coordinates = {{coord|49.9055|3.9084|display=it|region:FR_type:river_source:GNS-enwiki}}

| progression = {{ROise}}

| subdivision_type1 = Country

| subdivision_name1 = France

| length = {{convert|56.3|km|abbr=on}}

| source1_elevation = {{convert|273|m|abbr=on}}

}}

The Thon or Ton is a small river in northern France. It is a tributary of the river Oise, which flows into the Seine. It crosses the Ardennes and Aisne departments and is the central river of the Thiérache.{{Sandre|H0030600|Le Ton}}