| Country: | JPN |
| Type: | National |
| Route: | 198 |
| Map Custom: | yes |
| Length Km: | 0.6 |
| Length Round: | 1 |
| Length Ref: | [1] |
| Established: | 18 May 1953 |
| Direction A: | West |
| Terminus A: | at Port of Moji |
| Direction B: | East |
| Terminus B: | at Moji-ku, Kitakyushu |
| Previous Type: | Route |
| Previous Route: | 197 |
| Next Type: | Route |
| Next Route: | 199 |
National Route 198 is a short national highway of Japan connecting Moji-ku, Kitakyūshū and Moji-ku, Kitakyūshū in Japan, with a total length of 0.6 km (0.37 mi).