Adriatic–Ionian motorway (Albanian: Autostrada Adriatiko-Joniane; Bosnian and Croatian: Jadransko-jonska autocesta; Montenegrin and Serbian: Jadransko-jonski autoput / Јадранско-јонски аутопут; Greek: Aftokinitodromos Adriatikis-Ioniou; Italian: Autostrada Adriatico-Ionica) or the Blue Corridor, is a future motorway that will stretch along the entire eastern shore of the Adriatic and Ionian seas, spanning the western coast of the Balkan Peninsula from Italy in the north through Slovenia, Croatia, Montenegro, Albania to Greece in the south.

Those countries have launched an initiative to list the motorway with Pan-European corridors in order to be able to secure foreign funding.

A route passing through the Trebinje field would require approval of both the Herzegovina-Neretva Canton and Republika Srpska.

A parallel expressway along the coast is also planned, that will connect directly to Croatian road network at Debeli Brijeg, however, this is not considered a part of Adriatic – Ionian route, and will not be built to full motorway standard.

Remaining parts of the corridor are planned to be expanded to full motorway standard like building new sections between Muriqan/Sukobin border crossing to SH1 at Bushat south of Shkodër, Thumane-Kashar-Rrogozhinë highway part of Milot-Fier upgrade to motorway standard linking with Fier Bypass, and expanding SH4 south of Fier with slight deviation at Pocem near Memaliaj.

From Rio to Pyrgos, another motorway (which is going to be the extension of the Olympia Odos-A5), is under construction to replace that section of the existing national road GR-9.

The Kalo Nero - Tsakona road is a branch of the GR-9 and it leads to the intersection with the A7 motorway, near the city of Kalamata.