The R390 road is a regional road in Ireland linking Athlone to Mullingar, all of it within County Westmeath. It passes through the town of Ballymore, and several hamlets, before terminating in Mullingar. The road is 43 km (27 mi) long.

• Roads in Ireland
• National primary road
• National secondary road

• Roads Act 1993 (Classification of Regional Roads) Order 2006 – Department of Transport