| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Puerto Macaco | city | Guaviare | Colombia | 2.00 | -71.05 | 830 | 179 |
| Puerto Macedo | city | Amazonas | Colombia | -1.18 | -71.90 | 314 | 0 |
| Puerto Machete | city | Norte de Santander | Colombia | 8.84 | -72.95 | 830 | 1895 |
| Puerto Mahates | city | Bolivar | Colombia | 10.25 | -75.20 | 29 | 12545 |
| Puerto Majagual | city | Sucre | Colombia | 9.85 | -75.62 | 29 | 1270 |
| Puerto Majiña | city | Meta | Colombia | 2.62 | -74.04 | 1122 | 539 |
| Puerto Mallarino | city | Valle del Cauca | Colombia | 3.45 | -76.48 | 2509 | 190535 |
| Puerto Manrique | city | Caqueta | Colombia | 1.71 | -75.12 | 1669 | 1478 |
| Puerto Maranãs | city | Amazonas | Colombia | -1.33 | -70.32 | 282 | 0 |
| Puerto Mariamanteca | city | Amazonas | Colombia | -1.41 | -70.61 | 285 | 0 |
| Puerto Mariti | city | Amazonas | Colombia | -1.17 | -69.98 | 272 | 0 |
| Puerto Marta | city | Santander | Colombia | 7.12 | -73.43 | 925 | 7472 |
| Puerto Martires | city | Santander | Colombia | 5.91 | -74.17 | 1151 | 2549 |
| Puerto Martínez | city | Choco | Colombia | 6.42 | -76.80 | 3 | 1160 |
| Puerto María | city | Meta | Colombia | 4.26 | -73.07 | 830 | 879 |
| Puerto María Manteca | city | Amazonas | Colombia | -1.41 | -70.61 | 285 | 0 |
| Puerto Matanza | city | Antioquia | Colombia | 7.73 | -74.75 | 141 | 1744 |
| Puerto Mazo | city | Meta | Colombia | 3.34 | -73.46 | 974 | 960 |
| Puerto Meluk | city | Choco | Colombia | 5.22 | -76.94 | 216 | 868 |
| Puerto Mercedes | city | Guaviare | Colombia | 1.18 | -72.88 | 830 | 132 |
| Puerto Merizalde | city | Valle del Cauca | Colombia | 3.25 | -77.42 | 49 | 3026 |
| Puerto Merizalde | city | Valle del Cauca | Colombia | 3.25 | -77.42 | 49 | 3026 |
| Puerto Miranda | city | Arauca | Colombia | 6.64 | -71.66 | 843 | 1126 |
| Puerto Miranda | city | Caqueta | Colombia | 1.01 | -76.21 | 1669 | 585 |
| Puerto Miranhas | city | Amazonas | Colombia | -1.33 | -70.32 | 282 | 0 |
| Puerto Miraña | city | Amazonas | Colombia | -1.33 | -70.32 | 282 | 0 |
| Puerto Miriti | city | Amazonas | Colombia | -1.17 | -69.98 | 272 | 0 |
| Puerto Miritu | city | Amazonas | Colombia | -1.17 | -69.98 | 272 | 0 |
| Puerto Mister | city | Vichada | Colombia | 5.42 | -70.59 | 351 | 109 |
| Puerto Monte Adentro | city | Caqueta | Colombia | 0.79 | -74.64 | 830 | 447 |
| Puerto Morrito | city | Atlantico | Colombia | 10.83 | -74.73 | 19 | 92254 |
| Puerto Morroco | city | Meta | Colombia | 3.55 | -73.91 | 2070 | 2384 |
| Puerto Mosco | city | Meta | Colombia | 3.34 | -73.43 | 902 | 604 |
| Puerto Mosquito | city | Cesar | Colombia | 8.19 | -73.75 | 118 | 1234 |
| Puerto Mosquitos | city | Cesar | Colombia | 8.19 | -73.75 | 118 | 1234 |
| Puerto Murillo | city | Vichada | Colombia | 6.16 | -68.49 | 170 | 47 |
| Puerto Murillo | city | Choco | Colombia | 4.70 | -76.91 | 144 | 369 |
| Puerto Mutatá | city | Cordoba | Colombia | 7.40 | -75.90 | 6085 | 1735 |
| Puerto Mutis | city | Choco | Colombia | 6.23 | -77.40 | 291 | 4026 |