| Orielton Lagoon | |
| Pushpin Map: | Australia Tasmania |
| Pushpin Map Alt: | A map of Tasmania, Australia with a mark indicating the location of Orielton Lagoon |
| Pushpin Label Position: | left |
| Pushpin Map Caption: | Location in Tasmania |
| Location: | South east Tasmania, Australia |
| Coords: | -42.79°N 147.53°W |
| Type: | Dystrophic lagoon |
| Basin Countries: | Australia |
| Area: | [1] |
The Orielton Lagoon is a shallow dystrophic lagoon located west of Sorell in south east Tasmania, Australia.
The lagoon is 265ha in area and averages in depth, separated from Pitt Water by the Sorell Causeway.[2] It is a Ramsar[3] Wetland, providing habitat for migratory shorebirds and regionally significant flora and fauna.[4] The lagoon is part of the South Arm Important Bird Area (IBA), identified as such by BirdLife International because of its importance for the conservation of pied oystercatchers and of the migratory waders, or shorebirds, of the East Asian – Australasian Flyway.[5]