| Country: | HUN |
| Type: | M |
| Route: | 31 |
| Map: | M31 autópálya - térkép.png |
| Length Km: | 12 |
| Terminus A: | M0 near Nagytarcsa |
| Terminus B: | M3 near Gödöllő |
| Counties: | Pest |
| Cities: | Budapest, Gödöllő |
The M31 motorway (Hungarian: M31-es autópálya) is a motorway in Hungary, that runs between the M0 motorway at Nagytarcsa and the M3 motorway at Gödöllő.
The M31 motorway runs through the following municipalities:
| M0 (Nagytarcsa) – M3 (Gödöllő) (12 km) | ||||
| Exit | km | Destinations | Notes | |
|---|---|---|---|---|
| 0 | Nagytarcsa Budapest International Airport, Szolnok, Szeged, Pécs, Székesfehérvár, Győr – Vác, Szentendre | Budapest bypass | ||
| 9 | Gödöllő-West | |||
| 12 | Vác / Gödöllő Budapest – Budapest International Airport, Szolnok, Szeged, Pécs, Székesfehérvár, Győr | The road turns toward -> Budapest or Nyíregyháza | ||