| Country: | KOR |
| Type: | EX |
| Route: | 551 |
| Alternate Name: | Jungang Expressway Branch 중앙고속도로지선 |
| Map: | 551 Jungang Branch.svg |
| Length Km: | 18.2 |
| Established: | 1996 |
| Direction A: | South |
| Terminus A: | Gimhae, Gyeongnam Namhae Expressway |
| Junction: | Jungang Expressway |
| Direction B: | North |
| Terminus B: | Yangsan, Gyeongnam Gyeongbu Expressway |
| Hangul: | 중앙고속도로지선 |
| Rr: | Jungang-gosokdoro-jiseon |
| Mr: | Chungang-gosoktoro-jisŏn |
The Jungang Expressway Branch is an expressway in South Korea. It connects Gimhae to Yangsan of South Gyeongsang Province. The expressway's route number is 551.
It link Namhae Expressway(Gimhae) and Gyeongbu Expressway(Yangsan). and doesn't have any Service Area.