| Thongmyxay | |
| Official Name: | Thongmyxay district |
| Settlement Type: | District |
| Subdivision Type: | Country |
| Subdivision Name: | Laos |
| Subdivision Type1: | Province |
| Subdivision Name1: | Sainyabuli |
| Timezone: | ICT |
| Utc Offset: | +7 |
Thongmyxay is a district of Sainyabuli province, Laos.[1]