| Subdivision Type: | Country |
| Pushpin Map: | Hungary |
| Pushpin Map Caption: | Location of Ludányhalászi |
| Coordinates: | 48.1332°N 19.5228°W |
| Timezone: | CET |
| Utc Offset: | +1 |
| Timezone Dst: | CEST |
| Utc Offset Dst: | +2 |
| Official Name: | Ludányhalászi |
| Subdivision Type1: | County |
| Subdivision Name1: | Nógrád |
| Subdivision Type2: | Subregion |
| Subdivision Name2: | Szécsényi |
| Area Total Km2: | 21.20 |
| Population As Of: | 2001 |
| Population Total: | 1635 |
| Population Density Km2: | 77.12 |
| Postal Code Type: | Postal code |
| Postal Code: | 3188 |
| Area Code: | 32 |
Ludányhalászi is a village in Hungary, Nógrád county. It is the longest village in Central Europe.