| Zlatná na Ostrove | |
| Other Name: | Csallóközaranyos |
| Settlement Type: | Municipality |
| Subdivision Type: | Country |
| Subdivision Type2: | Region |
| Subdivision Type3: | District |
| Subdivision Name3: | Komárno District |
| Pushpin Map: | Slovakia Nitra Region#Slovakia |
| Pushpin Relief: | 1 |
| Pushpin Map Caption: | Location of Zlatná na Ostrove in the Nitra Region##Location of Zlatná na Ostrove in Slovakia |
| Coordinates: | 47.77°N 17.97°W |
| Established Title: | First mentioned |
| Established Date: | 1267 |
| Area Footnotes: | [1] |
| Area Total Km2: | 35.31 |
| Elevation Footnotes: | [2] |
| Elevation M: | 110 |
| Population Footnotes: | [3] |
| Population Total: | 2407 |
| Timezone1: | CET |
| Utc Offset1: | +1 |
| Timezone1 Dst: | CEST |
| Utc Offset1 Dst: | +2 |
| Postal Code Type: | Postal code |
| Postal Code: | 946 12 |
| Area Code: | +421 35 |
| Blank Name: | Car plate |
| Blank Info: | KN |
Zlatná na Ostrove (Hungarian: Csallóközaranyos, in Hungarian pronounced as /ˈtʃɒlːoːkøzɒrɒɲoʃ/) is a village and municipality in the Komárno District in the Nitra Region of south-west Slovakia.
The village lies at an altitude of 120 metres and covers an area of 35.407 km².It has a population of about 2555 people.
In the 9th century, the territory of Zlatná na Ostrove became part of the Kingdom of Hungary. In historical records the village was first mentioned in 1267.After the Austro-Hungarian army disintegrated in November 1918, Czechoslovak troops occupied the area, later acknowledged internationally by the Treaty of Trianon. Between 1938 and 1945 Zlatná na Ostrove once more became part of Miklós Horthy's Hungary through the First Vienna Award. From 1945 until the Velvet Divorce, it was part of Czechoslovakia. Since then it has been part of Slovakia.
The village is about 91% Hungarian, 8% Slovak with minorities.
The village has a public library and a football pitch.