| D420 state road | |
|---|---|
| Route information | |
| Length | 2.8 km (1.7 mi) |
| Major junctions | |
| From | |
| To | |
| Location | |
| Country | Croatia |
| Counties | Dubrovnik-Neretva |
| Major cities | Dubrovnik |
| Highway system | |

D420 is a state road in the northern outskirts of the city of Dubrovnik, Croatia, connecting the Port of Gruž to the D8 state road. The road is 2.8 km (1.7 mi) long.
The road, as well as all other state roads in Croatia, is managed and maintained by Hrvatske Ceste, state owned company.
This article contains a bulleted list or table of intersections which should be presented in a properly formatted junction table. (November 2021) |
| D420 junctions/populated areas | |
| Type | Slip roads/Notes |
| Dubrovnik Ž6254 to Komolac, Mokošica and Lozica (D8). The northern terminus of the road. | |
| Port of Gruž The southern terminus of the road. | |