| Martaza Lagoon | |
| Caption Map: | The Martaza Lagoon on the schematic map of the Tuzly Lagoons (#11) |
| Pushpin Map: | Ukraine Odesa Oblast |
| Pushpin Map Alt: | Location of a lagoon in Ukraine |
| Location: | Black Sea |
| Coords: | 45.7531°N 29.8298°W |
| Oceans: | Atlantic Ocean |
| Countries: | Ukraine |
| Area: | 50ha |
Martaza Lagoon (Ukrainian: Мартаза, Romanian; Moldavian; Moldovan: Caraceauş) is a small salty lagoon in the Tuzly Lagoons group in Bilhorod-Dnistrovskyi Raion of Odesa Oblast, Ukraine. It is separated from the Shahany Lagoon by the sandbar in its north part, near the village of Rybalske (old name - Martaza). The total area of the lagoon - 0.5 km2.
The water body is included to the Tuzly Lagoons National Nature Park.