| Type: | I |
| Route: | 80 |
| Map: | Bulgaria roads map bg.svg |
| Country: | BGR |
| Length Km: | 6.5 |
| Terminus A: | Km 99.3 of Maritsa motorway near Svilengrad |
| Terminus B: | Bulgaria–Greece border; Road 51 in Greece |
Republican Road II-80 (Bulgarian: Републикански път II-80) is a four-lane 2nd class road in southeastern Bulgaria, running entirely through the territory of Svilengrad Municipality of Haskovo Province.[1] With a length of 6.5 km, it is the second shortest second class road in the country, after the 6.0 km II-17 road. It has four lanes throughout its entire length.
The road starts at Km 99.3 of the Maritsa motorway northwest of the town of Svilengrad[2] and proceeds in direction southwest, crossing the river Maritsa and reaching Km 366.8 of the first class I-8 road at Kapitan Petko Voyvoda neighbourhood of Svilengrad. It then runs south until the border checkpoint between Bulgaria and Greece Kapitan Petko Voyvoda–Ormenio, where it continues as Road 51 of the Greek road network.[2] [3]