Loing

{{Short description|River in France}}

{{Infobox river

| name = Loing

| image = Alfred Sisley 012.jpg

| image_caption = Loing River; painted by Alfred Sisley

| map = Loing.png

| mapframe = yes

| mapframe-zoom = 7

| source1_location = Burgundy

| source1_coordinates= {{coord|47|33|13|N|3|13|51|E}}

| mouth_location = Seine

| mouth_coordinates = {{coord|48|23|13|N|2|48|9|E|format=dms|display=inline,title}}

| progression = {{RSeine}}

| subdivision_type1 = Country

| subdivision_name1 = France

| length = {{convert|143|km|mi|abbr=on}}

| source1_elevation = {{convert|320|m|ft|abbr=on}}

| mouth_elevation = {{convert|45|m|ft|abbr=on}}

| discharge1_avg = {{convert|19|m3/s|cuft/s|abbr=on}}

| basin_size = {{convert|4150|km2|mi2|abbr=on}}

| extra =

}}

The Loing ({{IPA|fr|lwɛ̃|-|LL-Q150 (fra)-Jérémy-Günther-Heinz Jähnick-Loing.wav}}) is a {{convert|143|km|mi|abbr=on}} long river in central France, a left tributary of the Seine.{{sandre|id=F4--0200|nom=Le Loing}}

Its source is in Sainte-Colombe-sur-Loing, in the southwest of the department of Yonne, and it flows into the Seine in Saint-Mammès, near Moret-sur-Loing.

Its main tributaries are the Ouanne, the Aveyron, the Puiseaux, the Solin, the Lunain and the Orvanne.

The part of the Briare Canal between Rogny-les-Sept-Écluses and Montargis runs parallel to the Loing.