| Ministry of Maritime Affairs | |
| Native Name: | Ministério do Mar |
| Type: | Ministry |
| Seal: | Coat of arms of Portugal.svg |
| Jurisdiction: | Government of Portugal |
| Minister1 Name: | António Costa Silva |
| Minister1 Pfo: | Minister of the Economy and Maritime Affairs |
The Ministry of Maritime Affairs (Portuguese: Ministério do Mar) is a Portuguese government ministry. The Ministry of Maritime Affairs is responsible for the coordination of maritime policy, and deals with such aspects as fisheries, the merchant navy, exploitation of marine resources, regulation of marine conservation, planning, scientific research and technological development related to the oceans, promotion of an effective presence in territorial waters, as well as national participation in European and international bodies responsible for the design and monitoring of maritime policies.[1]