| Loun | |
| States: | Indonesia |
| Region: | Maluku |
| Extinct: | ? |
| Ref: | e17 |
| Familycolor: | Austronesian |
| Fam2: | Malayo-Polynesian (MP) |
| Fam3: | Central–Eastern MP |
| Fam4: | Central Maluku ? |
| Fam5: | East Central Maluku |
| Fam6: | Seram ? |
| Fam7: | Nunusaku |
| Fam8: | Three Rivers |
| Fam9: | Amalumute |
| Iso3: | lox |
| Glotto: | loun1239 |
| Glottorefname: | Loun |
| Script: | Latin |
The Loun language is an extinct Austronesian language once spoken in Indonesia, mainly in the Maluku archipelago.