| Nagybörzsöny | |
| Other Name: | Deutschpilsen |
| Settlement Type: | Village |
| Pushpin Map: | Hungary |
| Subdivision Type: | Country |
| Subdivision Name: |  Hungary |
| Subdivision Type1: | Region |
| Subdivision Name1: | Central Hungary |
| Subdivision Type2: | County |
| Subdivision Name2: | Pest County |
| Subdivision Type3: | Sub region |
| Subdivision Name3: | Szobi |
| Area Total Km2: | 50.69 |
| Population As Of: | 1 January 2008 |
| Population Total: | 795 |
| Population Density Km2: | 15.68 |
| Timezone: | CET |
| Utc Offset: | +1 |
| Timezone Dst: | CEST |
| Utc Offset Dst: | +2 |
| Coordinates: | 47.9333°N 68°W |
| Postal Code Type: | Postal code |
| Postal Code: | 2634 |
| Area Code: | 36 27 |
Nagybörzsöny (de|Deutschpilsen or German: Deutsch Pilsen) is a village in Pest County, Hungary.
Nagybörzsöny is a village in the Börzsöny Mountains. It is near the National Park of Duna-Ipoly. The Börzsöny-creek flows through the village.
The earlier name of this village was Börzsöny and it was, in all probability, founded in the 12th century by King Géza II of Hungary. In medieval times, it was able to grow into a full-fledged mining town due to its proximity to various ores, including gold. Documents dating from 1312 already describe these mines. However, the most significant part in the mines' history took place in the eighteenth century. In 1789, Pál Kitaibel officially discovered the element Tellurium in the Nagybörzsöny ores. Two other Hungarians were also noted for their research of the element. In 1782, Franz-Joseph Müller von Reichenstein, otherwise known as (Müller Ferenc), independently named the element. A third Hungarian who also laid claim to Tellurium was Ignaz von Born. Muller was from Sibiu/Nagyszeben in what is now Transylvania, and von Born worked in Vienna. In 1798, the new element was named by Martin Heinrich Klaproth; the name is derived from the Latin word "tellus", meaning earth. Tellurium has thermoelectric applications, and was used in alloys within the steel industry. The element eventually played an important role in the making of the outer shell of the first atom bomb.
It is the terminus of a narrow-gauge railway to Szob.[1]