| Country: | HUN |
| Type: | MR |
| Route: | 403 |
| Alternate Name: | Eastern bypass of Nyíregyháza |
| Map: | 403-as fout pirosterkep.PNG |
| Length Km: | 14 |
| History: | 2006–2008 |
| Terminus A: | in Nyíregyháza-kelet |
| Junction: |
|
| Terminus B: | near Nyírtura |
| Counties: | Szabolcs-Szatmár-Bereg |
| Cities: | Nyíregyháza |
The Main road 403 (hu|403-as főút) is a short bypass direction First class main road near Nyíregyháza, that connects the Nyírgegyháza-kelet junction in M3 motorway to the Main road 4 near Nyírmada. The road is 14km (09miles) long.[1]
The road, as well as all other main roads in Hungary, is managed and maintained by Magyar Közút, a state owned company.