| Country: | JPN |
| Type: | National |
| Route: | 190 |
| Map Custom: | yes |
| Length Km: | 43.7 |
| Length Ref: | [1] |
| Established: | 18 May 1953 |
| Direction A: | West |
| Terminus A: | in San'yō-Onoda |
| Direction B: | East |
| Previous Type: | Route |
| Previous Route: | 189 |
| Next Type: | Route |
| Next Route: | 191 |
National Route 190 is a national highway of Japan connecting Yamaguchi and San'yō-Onoda in Japan, with a total length of 43.7km (27.2miles).