Longchaeng | |
|---|---|
| Longchaeng district | |
 Location of Longchaeng district in Laos | |
| Country | Laos |
| Province | Xaisomboun |
| Population (2015) | |
| • Total | 8,834 |
| Time zone | UTC+7 (ICT) |
Longchaeng (Lao: ເມືອງລ້ອງແຈ້ງ, pronounced [mɯ́aŋ lɔ̂ːŋ tɕɛ̂ːŋ]) is a district of Xaisomboun province, Laos.