| Country: | MMR |
| Type: | NH |
| Route: | 8 |
| Direction A: | North |
| Direction B: | South |
| Terminus A: | Payagyi |
| Terminus B: | Myeik |
| Cities: | Thaton, Mawlamyine, Dawei |
National Highway 8 (NR8), or simply Highway No. 8 is the most important highway of southeastern Burma. It runs from Payagyi to Myeik, connecting Bago to Myeik.
The highway is joined by National Highway 1 in Payagyi (north of Bago) at 17.4742°N 96.5275°W. At Thaton, it joins National Road 85. The highway then continues south and ends on the coast at Myeik at 12.4422°N 98.5953°W.
During the ongoing Myanmar civil war, Karen National Liberation Army and People's Defence Force groups took control of the highway between Ye and Thanbyuzayat in southern Mon State and enforced checkpoints on the junta's military personnel travelling south.[1]