| Dolný Ohaj | |
| Settlement Type: | Municipality |
| Subdivision Type: | Country |
| Subdivision Type2: | Region |
| Subdivision Type3: | District |
| Subdivision Name3: | Nové Zámky District |
| Pushpin Map: | Slovakia Nitra Region#Slovakia |
| Pushpin Relief: | 1 |
| Pushpin Map Caption: | Location of Dolný Ohaj in the Nitra Region##Location of Dolný Ohaj in Slovakia |
| Coordinates: | 48.0833°N 33°W |
| Established Title: | First mentioned |
| Established Date: | 1293 |
| Area Footnotes: | [1] |
| Area Total Km2: | 17.928 |
| Elevation Footnotes: | [2] |
| Elevation M: | 124 |
| Population Footnotes: | [3] |
| Population Total: | 1519 |
| Population Density Km2: | auto |
| Timezone1: | CET |
| Utc Offset1: | +1 |
| Timezone1 Dst: | CEST |
| Utc Offset1 Dst: | +2 |
| Postal Code Type: | Postal code |
| Postal Code: | 941 43 |
| Area Code: | 421-35 |
| Blank Name: | Car plate |
| Blank Info: | NZ |
| Website: | www.obecdolnyohaj.sk |
Dolný Ohaj (Hungarian: Ohaj) is a municipality and village in the Nové Zámky District in the Nitra Region of south-west Slovakia.
In historical records the village was first mentioned in 1293.
The village lies at an altitude of 124 metres and covers an area of 17.928 km². It has a population of about 1720 people.
The population is about 98% Slovak.
The village has a public library.
The records for genealogical research are available at the state archive "Statny Archiv in Nitra, Slovakia"