| Official Name: | Nildandahinna |
| Native Name: | Sinhala; Sinhalese: නිල්දණ්ඩාහින්න Tamil: நில்தண்டாஹின்ன |
| Settlement Type: | Town |
| Subdivision Type: | Country |
| Subdivision Name: | Sri Lanka |
| Subdivision Type1: | Province |
| Subdivision Name1: | Central Province |
| Subdivision Type2: | District |
| Subdivision Name2: | Nuwara Eliya[1] |
| Subdivision Type3: | Divisional Secretariat[2] |
| Subdivision Name3: | Walapane[3] |
| Government Type: | Divisional Secretariat |
| Unit Pref: | Metric |
| Area Total Km2: | 1.663 |
| Timezone: | Sri Lanka Standard Time |
| Utc Offset: | +5:30 |
| Coordinates: | 7.0803°N 80.8933°W |
| Elevation M: | 1060 |
| Elevation Ft: | 3444 |
| Postal Code Type: | Postal codes |
| Postal Code: | 22280 |
| Area Code: | 052 |
| Governing Body: | Walapane[4] |
| Timezone1: | Sri Lanka Time |
Nildandahinna (Sinhala; Sinhalese: නිල්දණ්ඩාහින්න) is a town in Sri Lanka, located within Nuwara Eliya District. Nildandahinna Postal code is 22280. Also Sri Sumangala National College is located in Nildandahinna. Nildandahinna is administrated by Walapane Divisional Secretariat.
Nildandahinna is located above 1060m (3,480feet) above sea level. Nildandahinna has a tropical rainforest climate.[5] It is usually (very) warm, humid and rainy all year round. It is dry for 49 days a year with an average humidity of 84% and an UV-index of 6. The temperatures range from 24 °C to just 14 °C in Nildandahinna. The terrain is mostly mountainous, with deep valleys cutting into it. The two main mountain regions are the Pidurutalagala range.
The population is only Sinhalese.