See also: Sielnica, Poland.
| Sielnica | |
| Settlement Type: | Municipality |
| Subdivision Type: | Country |
| Subdivision Type2: | Region |
| Subdivision Name2: | Banská Bystrica |
| Subdivision Type3: | District |
| Subdivision Name3: | Zvolen |
| Pushpin Map: | Slovakia Banská Bystrica Region#Slovakia |
| Pushpin Relief: | 1 |
| Pushpin Map Caption: | Location of Sielnica in the Banská Bystrica##Location of Sielnica in Slovakia |
| Coordinates: | 48.6333°N 26°W |
| Established Title: | First mentioned |
| Established Date: | 1250 |
| Area Total Km2: | 17.83[1] |
| Area Total Sq Mi: | 6.88 |
| Elevation M: | 338[2] |
| Elevation Ft: | 1,109 |
| Population Total: | 1410[3] |
| Population Density Km2: | 78.7[4] |
| Population Density Sq Mi: | 30.4 |
| Timezone1: | CET |
| Utc Offset1: | +1 |
| Timezone1 Dst: | CEST |
| Utc Offset1 Dst: | +2 |
| Postal Code Type: | Postal code |
| Postal Code: | 962 31 |
| Area Code: | +421 45 |
| Blank Name: | Car plate |
| Blank Info: | ZV |
Sielnica (Hungarian: Szélnye) is a village and municipality of the Zvolen District in the Banská Bystrica Region of Slovakia.
Before the establishment of independent Czechoslovakia in 1918, Sielnica was part of Zólyom County within the Kingdom of Hungary. From 1939 to 1945, it was part of the Slovak Republic.