The Maritime Safety Administration of the People's Republic of China (CMSA; Chinese: 中华人民共和国海事局) is a government agency of departmental grade (正司局级) under the Ministry of Transportation.

The MSA administers all matters related to maritime and shipping safety, including the supervision of maritime traffic safety and security, prevention of pollution from ships, inspection of ships and offshore facilities, navigational safety measures (including Search and Rescue, Aids to Navigation and the Global Maritime Distress and Safety System), administrative management of port operations, and law enforcement on matters of maritime safety law.

The agency is organized into the following functions: The MSA's subordinate offices include:[4] [5] The China Rescue and Salvage Bureau operates as an independent entity of the Ministry of Transport, but it shares personnel and leadership with the MSA.

The MSA maintains 15 Regional MSAs,[6] some covering more than one of the 20 coastal and riverine provinces, under which 97 local branches have been established.

The MSA has 25,000 officials and other working staff, who operate a patrol force of 1,300 vessels and watercraft of various types.