| Klasov | |
| Other Name: | Kalász |
| Settlement Type: | Municipality |
| Subdivision Type: | Country |
| Subdivision Type1: | Region |
| Subdivision Type2: | District |
| Subdivision Name2: | Nitra District |
| Pushpin Map: | Slovakia Nitra Region#Slovakia |
| Pushpin Relief: | 1 |
| Pushpin Map Caption: | Location of Klasov in the Nitra Region##Location of Klasov in Slovakia |
| Coordinates: | 48.28°N 18.27°W |
| Established Title: | First mentioned |
| Established Date: | 1232 |
| Area Footnotes: | [1] |
| Area Total Km2: | 12.23 |
| Elevation Footnotes: | [2] |
| Elevation M: | 180 |
| Population Footnotes: | [3] |
| Population Total: | 1429 |
| Timezone1: | CET |
| Utc Offset1: | +1 |
| Timezone1 Dst: | CEST |
| Utc Offset1 Dst: | +2 |
| Postal Code Type: | Postal code |
| Postal Code: | 951 53 |
| Area Code: | +421 37 |
| Blank Name: | Car plate |
| Blank Info: | NR |
Klasov (Hungarian: Kalász) is a village and municipality in the Nitra District in western central Slovakia, in the Nitra Region.[4]
In historical records the village was first mentioned in 1232.
The village lies at an altitude of and covers an area of . It has a population of about 1,210 people.
The village is approximately 55% Slovak, 45% Magyar.
The village has a public library and football pitch, and tennis pitch in Penzion Agroland.
The records for genealogical research are available at the state archive "Statny Archiv in Nitra, Slovakia"