| Ruský Potok | |
| Settlement Type: | Municipality |
| Subdivision Type: | Country |
| Subdivision Type2: | Region |
| Subdivision Name2: | Prešov |
| Subdivision Type3: | District |
| Subdivision Name3: | Snina |
| Pushpin Map: | Slovakia Prešov Region#Slovakia |
| Pushpin Relief: | 1 |
| Pushpin Map Caption: | Location of Ruský Potok in the Prešov Region##Location of Ruský Potok in Slovakia |
| Coordinates: | 49.0333°N 48°W |
| Established Title: | First mentioned |
| Established Date: | 1635 |
| Area Total Km2: | 12.88[1] |
| Area Total Sq Mi: | 4.97 |
| Elevation M: | 428[2] |
| Elevation Ft: | 1,404 |
| Population Total: | 125[3] |
| Population Density Km2: | 9.86[4] |
| Population Density Sq Mi: | 3.81 |
| Timezone1: | CET |
| Utc Offset1: | +1 |
| Timezone1 Dst: | CEST |
| Utc Offset1 Dst: | +2 |
| Postal Code Type: | Postal code |
| Postal Code: | 067 66 |
| Area Code: | +421 57 |
| Blank Name: | Car plate |
| Blank Info: | SV |
Ruský Potok (Hungarian: Oroszpatak, Руськый Потік) is a village and municipality in Snina District in the Prešov Region of north-eastern Slovakia. In historical records the village was first mentioned in 1635. A Rusyn wooden Orthodox church dedicated to the Archangel Michael is located in the village, it was built in 1740.
The municipality lies at an altitude of 440 metres and covers an area of 12.885 km2. According to the 2013 census it had a population of 133 inhabitants. Situated in the buffer zone of the Poloniny National Park it offers good access to some of the National Park's hiking trails. Several components of the Primeval Beech Forests of the Carpathians UNESCO World Heritage Site are also close to the village.
Before the establishment of independent Czechoslovakia in 1918, Ruský Potok was part of Zemplén County within the Kingdom of Hungary. In 1939, it was for a short time part of the Slovak Republic. As a result of the Slovak–Hungarian War of 1939, it was from 1939 to 1944 again part of Hungary. In the autumn of 1944, the Red Army entered Ruský Potok and it was once again part of Czechoslovakia.