Bag-o Isi Island
| Geography | |
|---|---|
| Coordinates | 11°18′52″N 123°10′9″E / 11.31444°N 123.16917°E |
| Archipelago | Concepcion Islands |
| Adjacent to | Visayan Sea |
| Highest elevation | 232 ft (70.7 m) |
| Administration | |
| Region | Western Visayas |
| Province | Iloilo |
| Municipality | Concepcion |
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Bag-o Isi Island (variously Magaisi Island or Magaisi Islet) is a small island in northeastern Iloilo, Philippines. It is part of the municipality of Concepcion.