| Country: | JPN |
| Type: | National |
| Route: | 478 |
| Map Custom: | yes |
| Length Km: | 63.9 |
| Length Ref: | [1] |
| Previous Type: | Route |
| Previous Route: | 477 |
| Next Type: | Route |
| Next Route: | 479 |
National Route 478 is a national highway of Japan connecting between Miyazu, Kyoto and Kumiyama, Kyoto in Japan, with total length has 63.9km (39.7miles).
A major part of the road is known as the, a toll road connecting Fushimi-ku, Kyoto and Miyazu, Kyoto managed by West Nippon Expressway Company.