| Official Name: | Aranayaka |
| Native Name: | අරණායක |
| Settlement Type: | Town |
| Pushpin Map: | Sri Lanka |
| Pushpin Map Caption: | Location in Sri Lanka |
| Subdivision Type: | Country |
| Subdivision Name: | Sri Lanka |
| Subdivision Type1: | Province |
| Subdivision Name1: | Sabaragamuwa Province |
| Subdivision Type2: | District |
| Subdivision Name2: | Kegalle District |
| Timezone: | SLST |
| Utc Offset: | +05:30 |
| Coordinates: | 7.1476°N 80.4547°W |
| Postal Code: | 71540 |
| Area Code: | 035 |
Aranayaka (Sinhala; Sinhalese: අරණායක) is a town in the Kegalle District of Sabaragamuwa Province in Sri Lanka. Its agricultural economy revolves around local rubber, tea, banana and mahogany plantations.
The Mawanella-Aranayaka-Horawella Road (Highway B278) passes through the middle of the city, running parallel to the Maha Oya on the east side. Dippitiya, a town situated 3km (02miles) north of Aranayaka, has a greater population but fewer amenities. The local police station is situated in the town of Gevilipitiya, 4.3km (02.7miles) north of Aranayaka.