| Marecka Kolej Dojazdowa | |
|---|---|
 Former terminus station building in Radzymin | |
| Overview | |
| Status | Defunct |
| Termini | |
| Stations | 12 |
| Service | |
| Type | Commuter rail |
| History | |
| Opened | 1896 |
| Closed | 1 September 1974 |
| Technical | |
| Line length | 20 km (12 mi) |
| Number of tracks | 1 |
| Track gauge | 750 mm (2 ft 5+1⁄2 in) |
| Old gauge | 800 mm (2 ft 7+1⁄2 in) |
Marecka Kolej Dojazdowa (English: Marki Commuter Railway) was a narrow gauge railway in Poland connecting Warsaw with Marki and Radzymin, it operated from 1896 to 1974. Originally built to 800 mm gauge, it was regauged to 750 mm in 1951.