| Demoutsantata | |
| Name Local: | Δεμουτσαντάτα |
| Periph: | Ionian Islands |
| Periphunit: | Kefalonia |
| Municipality: | Argostoli |
| Municunit: | Argostoli |
| Population: | 51 |
| Population As Of: | 2021 |
| Coordinates: | 38.153°N 20.553°W |
Demoutsantata (el|Δεμουτσαντάτα, before 1940: Μοντεσαντάτα - Montesantata[1]) is a village in the municipal unit of Argostoli on the island of Kefalonia, Greece. It is part of the community of Troianata. It is located 1 km south of Troianata and 6 km southeast of Argostoli.