Central Mahachai (เซ็นทรัล มหาชัย), previously known as CentralPlaza Mahachai, is a shopping mall and department store in Mueang Samut Sakhon District (Mahachai), Samut Sakhon Province, on the southern outskirts of Bangkok, Thailand.

It can be considered as another shopping mall in the Central Pattana network in the vicinity besides CentralPlaza Rama II in Bang Khun Thian area.

Its highlight is its location on the route between Bangkok and the south (Rama II Road), regarded as rest stop on its own and centre of various Thai foods especially seafood.

The building is designed in the concept of harbour and fisherman settlement, Samut Sakhon's identity.

[2][1] The total cost of the shopping complex was 4.75 billion baht.