| Country: | JPN |
| Type: | National |
| Route: | 118 |
| Map Custom: | yes |
| Length Km: | 206.1 |
| Length Ref: | [1] |
| Established: | 1953 |
| Direction A: | South |
| Terminus A: | in Mito, Ibaraki |
| Direction B: | North |
| Terminus B: | in Aizuwakamatsu, Fukushima |
| Previous Type: | Route |
| Previous Route: | 117 |
| Next Type: | Route |
| Next Route: | 119 |
National Route 118 is a national highway of Japan connecting Mito, Ibaraki and Aizuwakamatsu, Fukushima in Japan, with a total length of 206.1 km (128.06 mi).