The Danish national road 9 (Danish: Primærrute 9)is part of the Danish national road network. It runs between Odense on Funen and Nykøbing Falster by way of Svendborg and involves a ferry crossing between Langeland and Lolland.
The section of National road 9 between Odense and Svendborg follows the Svendborg Motorway. The route then continues across the islands of Tåsinge and Langeland to the small town of Spodsbjerg where there is a ferry service to Tårs on Lolland.
On Lolland, National road 9 continues east, joining Sydmotorvejen ("The South Motorway") just before Maribo and leaving it again at Sakskøbing. It then crosses the Frederick IX Bridge to Faslter before reaching Nykøbing Falster.