| Country: | FIN |
| Type: | Regional |
| Alternate Name: | Blue Road Karttula Road |
| Route: | 551 |
| Map Notes: | Emergency landing place along the road in Tervo. |
| Length Km: | 80 |
| Terminus A: | Kuopio |
| Terminus B: | Vesanto |
Finnish regional road 551 (Finnish: Seututie 551, Swedish: Regionalväg 551), or Blue Road (Finnish: Sininen tie, Swedish: Blå vägen)[1] is an east–west road in North Savo, Finland, which in the east starts from Kuopio's Pitkälahti, located at Highway 5 (E63), and continues west through the centers of Karttula, Tervo and Vesanto all the way to the village of Ahveninen.[2] The road is paved, dual lane and 80 kilometers long.[3]
The road is part of the Blue Highway, known as a tourist route.