| Country: | JPN |
| Type: | National |
| Route: | 126 |
| Image Notes: | Route 126 in Togane |
| Map Custom: | yes |
| Length Km: | 106.5 |
| Length Ref: | [1] |
| Established: | 1953 |
| Direction A: | West |
| Terminus A: | in Inage-ku, Chiba |
| Direction B: | East |
| Terminus B: | in Chōshi, Chiba |
| Previous Type: | Route |
| Previous Route: | 125 |
| Next Type: | Route |
| Next Route: | 127 |
National Route 126 is a national highway of Japan connecting Chōshi, Chiba and Inage-ku, Chiba in Japan, with a total length of 106.52NaN2.