| Nižná | |
| Settlement Type: | Municipality |
| Subdivision Type: | Country |
| Subdivision Type2: | Region |
| Subdivision Name2: | Trnava |
| Subdivision Type3: | District |
| Subdivision Name3: | Piešťany |
| Pushpin Map: | Slovakia Trnava Region#Slovakia |
| Pushpin Relief: | 1 |
| Pushpin Map Caption: | Location of Nižná in the Trnava Region##Location of Nižná in Slovakia |
| Coordinates: | 48.5364°N 17.6556°W |
| Established Title: | First mentioned |
| Established Date: | 1532 |
| Area Total Km2: | 8.04[1] |
| Area Total Sq Mi: | 3.10 |
| Elevation M: | 180[2] |
| Elevation Ft: | 590 |
| Population Total: | 548[3] |
| Population Density Km2: | 67.91[4] |
| Population Density Sq Mi: | 26.22 |
| Timezone1: | CET |
| Utc Offset1: | +1 |
| Timezone1 Dst: | CEST |
| Utc Offset1 Dst: | +2 |
| Postal Code Type: | Postal code |
| Postal Code: | 922 06 |
| Area Code: | +421 33 |
| Blank Name: | Car plate |
| Blank Info: | PN |
| Website: | www.obecnizna.sk |
Nižná (hu|Nézsnafalva) is a village and municipality in Piešťany District in the Trnava Region of western Slovakia.
In historical records the village was first mentioned in 1532.
The municipality lies at an altitude of 184 metres and covers an area of 8.051 km2. It has a population of about 517 people.