| Junquillal Bay Wildlife Refuge | |
| Iucn Category: | IV |
| Map: | Costa Rica |
| Location: | Guanacaste Province, Costa Rica |
| Coordinates: | 10.9644°N -85.6814°W |
| Area: | 4.38km2 |
| Established: | 1995 |
| Governing Body: | National System of Conservation Areas (SINAC) |
Junquillal Bay Wildlife Refuge, also called the Bahia Junquillal National Wildlife Refuge, is a 4.38km2 wildlife refuge in Guanacaste Province of northwestern Costa Rica.
It is a part of the Guanacaste Conservation Area and the Area de Conservación Guanacaste World Heritage Site.
It protects areas of tropical dry forest and coastal mangroves.