Adour

{{Short description|River in southwestern France}}

{{For|the turbine engine|Rolls-Royce Turbomeca Adour}}

{{Infobox river

| name = Adour

| name_native = {{native name|fr|L'Adour}}

| image = Aire-sur-l-Adour-adour.jpg

| image_caption = Adour seen from the bridge at Aire-sur-l'Adour

| map = Adour river watershed.jpg

| map_size = 250

| map_caption = Adour River watershed ([https://mghydro.com/watersheds/shared/75F244.html Interactive map])

| mapframe = yes

| mapframe-zoom = 7

| source1_location = High-Bigorre

| mouth_location = Atlantic Ocean

| mouth_coordinates = {{coord|43|31|46|N|1|31|25|W|format=dms|display=inline,title}}

| subdivision_type1 = Country

| subdivision_name1 = France

| length = {{convert|308|km|mi|abbr=on}}

| source1_elevation = {{convert|2200|m|ft|abbr=on}}

| discharge1_avg = {{convert|150|m3/s|cuft/s|abbr=on}}

| basin_size = {{convert|16880|km2|sqmi|abbr=on}}

| extra =

}}

The Adour ({{IPA|fr|aduʁ|-|LL-Q150 (fra)-Jérémy-Günther-Heinz Jähnick-Adour.wav}}; {{langx|eu|Aturri}}; {{langx|oc|Ador}}) is a river in southwestern France. It rises in High-Bigorre (Pyrenees), in the commune of Aspin-Aure, and flows into the Atlantic Ocean (Bay of Biscay) near Bayonne. It is {{convert|308.3|km}} long,{{sandre|id=Q---0000|nom=L'Adour}} of which the uppermost ca. {{convert|11|km}} is known as the Adour de Payolle. At its final stretch, i.e. on its way through Bayonne and a short extent upstream, the river draws the border between the Northern Basque Country and Landes regions.