| Country: | KOR |
| Type: | EX |
| Route: | 105 |
| Alternate Name: | Namhae Expressway 3rd Branch |
| Length Km: | 15.3 |
| Established: | 2017[1] |
| Direction A: | South |
| Terminus A: | Jinhae-gu, Changwon, South Gyeongsang |
| Junction: | 5 |
| Direction B: | North |
| Terminus B: | Gimhae, S. Gyeongsang |
The Namhae Expressway Branch 3, or the Namhae Expressway 3rd Branch (Korean: 남해고속도로제3지선) is an expressway in South Korea, connecting Changwon to Gimhae. It is branch line of Namhae Expressway.