The Route nationale 9, or RN 9, was a trunk road (nationale) in France between Moulins and the frontier with Spain.
Much of the route of the RN 9 has now been/or in the process of being upgraded or replaced by the A75 autoroute in particular the section south of Clermont Ferrand to Béziers. Depending on which Department the road is in the old road is now numbered as various RD numbers:
Moulins-Clermont Ferrand-Béziers- Narbonne - Perpignan - Spain
The road begins at Moulins with a junction with the RN 7. The road heads Southwest over the River Allier. The road follows the West bank of the river to Saint-Pourçain-sur-Sioule crossing the river and following it South. At Gannat the road meets the A 719, which connects Vichy, 20 km to the East, and the A71 autoroute. The RN 9 continues South to Riom and the volcanic region of Auvergne. The road is dual-carriageway for 10 km into the industrial city of Clermont-Ferrand.
After Clermont the road heads through the Massif Central countryside. Much of the RN 9 has now been upgraded or replaced by the A75 autoroute between Clermont-Ferrand and Béziers.