| Nullica River | |
| Name Other: | Myrrial River |
| Subdivision Type1: | Country |
| Subdivision Name1: | Australia |
| Subdivision Type2: | State |
| Subdivision Name2: | New South Wales |
| Subdivision Type3: | Region |
| Subdivision Name3: | South Eastern Highlands (IBRA), South Coast |
| Subdivision Type5: | Municipality |
| Subdivision Name5: | Bega Valley |
| Length: | 11km (07miles) |
| Depth Avg: | 0.6m (02feet) |
| Source1: | Nullica Hill, Nullica State Forest |
| Source1 Location: | west of Eden |
| Source1 Elevation: | 137m (449feet) |
| Mouth: | Tasman Sea, South Pacific Ocean |
| Mouth Location: | Nullica Bay, Twofold Bay |
| Basin Size: | 55km2 |
| Tributaries Right: | Leos Creek |
| Extra: | [1] [2] |
The Nullica River is an intermittently closed semi-mature saline coastal lagoon or perennial river, located in the South Coast region of New South Wales, Australia.
The Nullica River rises below Nullica Hill within Nullica State Forest, approximately west of Eden, The river flows generally east southeast, joined by one minor tributary, before reaching its mouth and emptying into Nullica Bay, within Twofold Bay, and spilling into the Tasman Sea of the South Pacific Ocean, east of Nullica. The river descends over its course.[1]
The catchment area of the river is with a volume of over a surface area of, at an average depth of .[3]
West of the river's mouth, the Princes Highway crosses the Nullica River.