Airain

{{Infobox river

| name = Airain

| image =

| image_caption =

| pushpin_map = France#France Centre

| source1_location = Nérondes

| source1_coordinates= {{coord|46|59|53|N|02|48|59|E}}

| mouth_location = Yèvre

| mouth_coordinates = {{coord|47|02|59|N|02|33|55|E|display=inline,title}}

| progression = {{RYèvre}}

| subdivision_type1 = Country

| subdivision_name1 = France

| length = {{convert|47.8|km|mi|abbr=on}}

| source1_elevation = {{convert|185|m|ft|abbr=on}}

| mouth_elevation = {{convert|139|m|ft|abbr=on}}

| discharge1_avg = {{convert|1.62|m3/s|cuft/s|abbr=on}}

| basin_size = {{convert|300|km2|sqmi|abbr=on}}

}}

The Airain or Airin ({{IPA|fr|ɛʁɛ̃}}) is a {{convert|47.8|km|mi|abbr=on}} long river in the Cher department in central France.{{Sandre|id=K55-0300|nom=Airin}} Its source is at Nérondes. It flows generally west, with a U shape. It is a left tributary of the Yèvre, into which it flows at Savigny-en-Septaine, {{convert|13|km|mi|abbr=on}} southeast of Bourges.