| Patvinsuo National Park | |
| Iucn Category: | II |
| Map: | Finland |
| Relief: | 1 |
| Location: | North Karelia, Finland |
| Coordinates: | 63.1114°N 30.7044°W |
| Area Km2: | 105 |
| Established: | 1982 |
| Visitation Num: | 12000 |
| Visitation Year: | 2009[1] |
| Governing Body: | Metsähallitus |
Patvinsuo National Park (fi|Patvinsuon kansallispuisto) is a national park in the North Karelia region of Finland, in the municipalities of Lieksa and Ilomantsi. It was established in 1982 and covers 105km2. There are 80km (50miles) of marked walking trails in the area. The park has bogs, former managed forest and slash-and-burn areas and some old-growth forests. Suomujärvi lake is located in the northeast area in the park.