| Official Name: | Veliki Otok |
| Pushpin Map: | Slovenia |
| Pushpin Label Position: | right |
| Pushpin Map Caption: | Location in Slovenia |
| Subdivision Type: | Country |
| Subdivision Name: | Slovenia |
| Subdivision Type1: | Traditional region |
| Subdivision Name1: | Inner Carniola |
| Subdivision Type2: | Statistical region |
| Subdivision Name2: | Littoral–Inner Carniola |
| Subdivision Type3: | Municipality |
| Subdivision Name3: | Postojna |
| Area Total Km2: | 17.32 |
| Population As Of: | 2002 |
| Population Total: | 148 |
| Population Blank1 Title: | Ethnicities |
| Population Blank2 Title: | Religions |
| Coordinates: | 45.7829°N 14.1953°W |
| Elevation M: | 539.8 |
| Footnotes: | [1] |
Veliki Otok (in Slovenian pronounced as /ˈʋeːliki ˈɔːtɔk/; German: Großotok,[2] Italian: Ottocco Grande) is a village north of Postojna in the Inner Carniola region of Slovenia. The entrance to Postojna Cave lies immediately east of the village. A second karst cave, known as Otok Cave (Slovenian: Otoška jama), lies 1 km north of the settlement.[3]
The church in the centre of the settlement is dedicated to Saint Catherine. A second church on a small hill close to the entrance to Otok Cave is dedicated to Saint Andrew. Both belong to the Parish of Postojna.[4]