| Rank | Country | Maritime claims |
| Afghanistan | none (landlocked) |
| Akrotiri | void |
| Albania | territorial sea: 12 nm continental shelf: 200-m depth or to the depth of exploitation |
| Algeria | territorial sea: 12 nm exclusive fishing zone: 32-52 nm |
| American Samoa | territorial sea: 12 nm exclusive economic zone: 200 nm |
| Andorra | none (landlocked) |
| Angola | territorial sea: 12 nm contiguous zone: 24 nm exclusive economic zone: 200 nm |
| Anguilla | territorial sea: 3 nm exclusive fishing zone: 200 nm |
| Antarctica | Australia, Chile, and Argentina claim Exclusive Economic Zone (EEZ) rights or similar over 200 nm extensions seaward from their continental claims, but like the claims themselves, these zones are not accepted by other countries; 21 of 28 Antarctic consultative nations have made no claims to Antarctic territory (although Russia and the US have reserved the right to do so) and do not recognize the claims of the other nations; also see the Disputes - international entry |
| Antigua and Barbuda | territorial sea: 12 nm contiguous zone: 24 nm exclusive economic zone: 200 nm continental shelf: 200 nm or to the edge of the continental margin |
| Arctic Ocean | void |
| Argentina | territorial sea: 12 nm contiguous zone: 24 nm exclusive economic zone: 200 nm continental shelf: 200 nm or to the edge of the continental margin |
| Armenia | none (landlocked) |
| Aruba | territorial sea: 12 nm |
| Ashmore and Cartier Islands | territorial sea: 12 nm contiguous zone: 12 nm exclusive fishing zone: 200 nm continental shelf: 200-m depth or to the depth of exploitation |
| Atlantic Ocean | void |
| Australia | territorial sea: 12 nm contiguous zone: 24 nm exclusive economic zone: 200 nm continental shelf: 200 nm or to the edge of the continental margin |
| Austria | none (landlocked) |
| Azerbaijan | none (landlocked) |
| Bahamas, The | territorial sea: 12 nm exclusive economic zone: 200 nm |
| Bahrain | territorial sea: 12 nm contiguous zone: 24 nm continental shelf: extending to boundaries to be determined |
| Bangladesh | territorial sea: 12 nm contiguous zone: 18 nm exclusive economic zone: 200 nm continental shelf: up to the outer limits of the continental margin |
| Barbados | territorial sea: 12 nm exclusive economic zone: 200 nm |
| Belarus | none (landlocked) |
| Belgium | territorial sea: 12 nm contiguous zone: 24 nm exclusive economic zone: geographic coordinates define outer limit continental shelf: median line with neighbors |