| Official Name: | Ottersøya |
| Other Name: | Ottersøy |
| Settlement Type: | Village |
| Pushpin Map: | Trøndelag#Norway |
| Pushpin Label Position: | top |
| Pushpin Map Caption: | Location of the village |
| Subdivision Type: | Country |
| Subdivision Name: | Norway |
| Subdivision Type1: | Region |
| Subdivision Name1: | Central Norway |
| Subdivision Type2: | County |
| Subdivision Name2: | Trøndelag |
| Subdivision Type3: | District |
| Subdivision Name3: | Namdalen |
| Subdivision Type4: | Municipality |
| Subdivision Name4: | Nærøysund |
| Timezone1: | CET |
| Utc Offset1: | +01:00 |
| Timezone1 Dst: | CEST |
| Utc Offset1 Dst: | +02:00 |
| Area Total Km2: | 0.32 |
| Population As Of: | 2023 |
| Population Total: | 248 |
| Population Density Km2: | 641 |
| Postal Code Type: | Post Code |
| Postal Code: | 7940 Ottersøy |
| Coordinates: | 64.8574°N 11.2881°W |
| Elevation M: | 6 |
| Elevation Footnotes: | [1] |
Ottersøya is a village in Nærøysund municipality in Trøndelag county, Norway. The village is located at the southwestern end of the Kvingra peninsula, just across the Nærøysundet from the town of Rørvik. In Ottersøya there are, among other things, grocery store, post office (Ottersøya has postcode 7940), hairdresser and petrol station. Important workplaces on Ottersøya besides trade and service are Nærøysund Kraftbetong A/S, Noprec - Containerservice Ottersøya and Mekon AS. In Ottersøya there is a large dry dock owned by Moen Slipp. Nærøysundet school, which is a fully divided primary school plus after-school, is located in Ottersøya. Ottersøy kindergarten is also located here.
The village of Torstad lies about north of Ottersøya. The Marøysund Bridge and Nærøysund Bridge (which connect Vikna to the mainland) lie just south of Ottersøya.[2] Before the mainland connection to Vikna and Rørvik was established in 1981, Ottersøya was the ferry port for Rørvik.
The 0.32km2 village has a population (2023) of 248 and a population density of .[3] The base district has 359 inhabitants.