| Country: | UKR |
| Type: | M |
| Route: | 21 |
| Map: | Ukraine road m21.jpg |
| Length Km: | 401.7 |
| Length Round: | 1 |
| Direction A: | North |
| Terminus A: | Belarusian border at Vistusovichi checkpoint |
| Direction B: | South |
| Terminus B: | Moldovan border at Mohyliv-Podilskyi (thru Otaci) |
| Previous Type: | M |
| Previous Route: | 20 |
| Next Type: | M |
| Next Route: | 22 |
| Oblasts: | Zhytomyr, Vinnytsia |
M21 is a Ukrainian international highway (M-highway) which connects Zhytomyr and Vinnytsia to the border with Moldova.[1] 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.[2] The section from Zhytomyr to the Belarusian border was previously P28.
| Marker | Main settlements | Notes | Highway Interchanges | |
|---|---|---|---|---|
| 0 km | • | |||
| Vinnytsia | ||||
| 220 km | Mohyliv-Podilskyi / Border (Moldova) | Border checkpoint |