Highway M21 (Ukraine)
M21 is a Ukrainian international highway which connects Zhytomyr and Vinnytsia to the border with Moldova. The highway also connects two major transnational corridors, Pan-European Corridor IX and the transportation corridor "Europe-Asia". The entire route is part of European route E583. The section from Zhytomyr to the Belorussian border was previously P28.
Route
| Marker | Main settlements | Notes | Highway Interchanges |
| 0 km | Zhytomyr | • | |
| Vinnytsia | |||
| 220 km | Mohyliv-Podilskyi / Border | Border checkpoint |