| 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 Maderas | city | Buenos Aires | Argentina | -34.60 | -58.37 | 0 | 630581 |
| Puerto Madero | city | Buenos Aires | Argentina | -34.60 | -58.37 | 0 | 630581 |
| Puerto Madero | city | Zacatecas | Mexico | 23.70 | -101.93 | 6837 | 596 |
| Puerto Madero | city | Quintana Roo | Mexico | 19.28 | -87.47 | 0 | 99 |
| Puerto Madero | city | Chiapas | Mexico | 14.72 | -92.42 | 0 | 17783 |
| Puerto Madero | city | Chiapas | Mexico | 14.72 | -92.42 | 0 | 17783 |
| Puerto Madres | city | Loreto | Peru | -4.02 | -76.50 | 830 | 0 |
| Puerto Madres | city | Loreto | Peru | -3.77 | -76.60 | 830 | 0 |
| Puerto Madrinas | city | Chubut | Argentina | -42.77 | -65.04 | 0 | 26934 |
| Puerto Madroño | city | Michoacan de Ocampo | Mexico | 19.34 | -101.31 | 7112 | 2761 |
| Puerto Madrugadores | city | Nuevo Leon | Mexico | 23.62 | -100.20 | 5869 | 3182 |
| Puerto Madryn | city | Chubut | Argentina | -42.77 | -65.04 | 0 | 26934 |
| Puerto Magdalena | city | Baja California Sur | Mexico | 24.63 | -112.14 | 134 | 0 |
| Puerto Mahates | city | Bolivar | Colombia | 10.25 | -75.20 | 29 | 12545 |
| Puerto Mai Albrigo | city | Santa Fe | Argentina | -29.51 | -59.63 | 59 | 327 |
| Puerto Mainiqui | city | Cusco | Peru | -11.93 | -72.87 | 1669 | 298 |
| Puerto Mairo | city | Pasco | Peru | -9.92 | -75.26 | 928 | 251 |
| Puerto Majagual | city | Sucre | Colombia | 9.85 | -75.62 | 29 | 1270 |
| Puerto Majiña | city | Meta | Colombia | 2.62 | -74.04 | 1122 | 539 |
| Puerto Malabrigo | city | Santa Fe | Argentina | -29.51 | -59.63 | 59 | 327 |
| Puerto Malabrigo | city | La Libertad | Peru | -7.70 | -79.44 | 9 | 579 |
| Puerto Maldonadas | city | Madre de Dios | Peru | -12.59 | -69.19 | 830 | 29472 |
| Puerto Maldonado | city | Madre de Dios | Peru | -12.59 | -69.19 | 830 | 29472 |
| Puerto Mallarino | city | Valle del Cauca | Colombia | 3.45 | -76.48 | 2509 | 190535 |
| Puerto Mamoré | city | Cochabamba | Bolivia | -16.70 | -64.80 | 830 | 1015 |
| Puerto Manatí | city | Las Tunas | Cuba | 21.36 | -76.83 | 0 | 2843 |
| Puerto Mancora | city | Piura | Peru | -4.11 | -81.07 | 32 | 5023 |
| Puerto Manrique | city | Caqueta | Colombia | 1.71 | -75.12 | 1669 | 1478 |
| Puerto Manu | city | Madre de Dios | Peru | -12.25 | -70.90 | 971 | 288 |
| Puerto Manzanillo | city | Limon | Costa Rica | 9.63 | -82.65 | 19 | 415 |
| Puerto Manzanillo | city | Cibao Noroeste | Dominican Republic | 19.82 | -71.65 | 13 | 17959 |
| Puerto Manzano | city | Neuquen | Argentina | -40.80 | -71.61 | 2890 | 3089 |
| Puerto Mapuyo | city | Ucayali | Peru | -10.57 | -73.07 | 1220 | 149 |
| Puerto Mara | city | Zulia | Venezuela | 11.00 | -71.79 | 3 | 5444 |
| Puerto Marangatú | city | Canindeyu | Paraguay | -24.62 | -54.35 | 830 | 243 |
| Puerto Maranãs | city | Amazonas | Colombia | -1.33 | -70.32 | 282 | 0 |
| Puerto Maravilla | city | Pando | Bolivia | -11.27 | -66.87 | 830 | 0 |
| Puerto Maravillas | city | Pando | Bolivia | -11.27 | -66.87 | 830 | 0 |
| Puerto Mariamanteca | city | Amazonas | Colombia | -1.41 | -70.61 | 285 | 0 |
| Puerto Mariato | city | Veraguas | Panama | 7.67 | -81.04 | 6 | 268 |
| Puerto Marite | city | Neembucu | Paraguay | -25.92 | -57.85 | 147 | 226 |
| Puerto Mariti | city | Amazonas | Colombia | -1.17 | -69.98 | 272 | 0 |
| Puerto Markham | city | Puno | Peru | -13.33 | -69.66 | 1669 | 154 |
| Puerto Marqués | city | Guerrero | Mexico | 16.80 | -99.84 | 121 | 43004 |
| Puerto Marta | city | Santander | Colombia | 7.12 | -73.43 | 925 | 7472 |
| Puerto Martires | city | Santander | Colombia | 5.91 | -74.17 | 1151 | 2549 |
| Puerto Martín Errecaborde | city | Misiones | Argentina | -25.90 | -54.62 | 265 | 5710 |
| Puerto Martínez | city | Choco | Colombia | 6.42 | -76.80 | 3 | 1160 |
| Puerto Martínez | city | San Luis Potosi | Mexico | 21.71 | -99.88 | 3349 | 1740 |
| Puerto Martínez | city | San Luis Potosi | Mexico | 21.42 | -98.93 | 830 | 16265 |
| Puerto María | city | Meta | Colombia | 4.26 | -73.07 | 830 | 879 |
| Puerto María | city | Presidente Hayes | Paraguay | -24.35 | -59.25 | 295 | 0 |
| Puerto María Auxiliadora | city | Alto Paraguay | Paraguay | -21.73 | -57.92 | 216 | 3423 |
| Puerto María Manteca | city | Amazonas | Colombia | -1.41 | -70.61 | 285 | 0 |
| Puerto Marín Balmaceda Airport | airport | -43.79 | -72.95 | 10 | 0 | ||
| Puerto Masachapa | city | Managua | Nicaragua | 11.78 | -86.52 | 29 | 5583 |
| Puerto Mata Ojos | city | Misiones | Argentina | -27.42 | -54.30 | 830 | 1087 |
| Puerto Mata de Cana | city | Apure | Venezuela | 7.03 | -67.45 | 78 | 149 |
| Puerto Matanza | city | Antioquia | Colombia | 7.73 | -74.75 | 141 | 1744 |
| Puerto Mateito | city | Cochabamba | Bolivia | -17.73 | -64.67 | 5869 | 1192 |
| Puerto Mateo | city | Cibao Norte | Dominican Republic | 19.73 | -70.59 | 246 | 32180 |
| Puerto Matuz | city | Guerrero | Mexico | 18.67 | -100.47 | 2851 | 7595 |
| Puerto Maunabo | city | Puerto Rico | United States | 17.99 | -65.89 | 0 | |
| Puerto Max | city | Concepcion | Paraguay | -22.68 | -57.73 | 229 | 447 |
| Puerto Max Airport | airport | -22.63 | -57.77 | 241 | 0 | ||
| Puerto Maya | city | Aragua | Venezuela | 10.53 | -67.40 | 830 | 0 |
| Puerto Mayo | city | Cusco | Peru | -12.46 | -73.87 | 1669 | 1661 |
| Puerto Mayor Otaño | city | Itapua | Paraguay | -26.40 | -54.70 | 249 | 14860 |
| Puerto Mazarron | city | Murcia | Spain | 37.57 | -1.26 | 3 | 11102 |
| Puerto Mazo | city | Meta | Colombia | 3.34 | -73.46 | 974 | 960 |
| Puerto Mburajhe | city | Itapua | Paraguay | -27.48 | -56.73 | 154 | 2905 |
| Puerto Medano | city | Canarias | Spain | 28.04 | -16.54 | 121 | 7965 |
| Puerto Mejillones | city | Magallanes y de la Antartica Chilena | Chile | -54.92 | -67.98 | 3 | 0 |
| Puerto Meliosilvo | city | San Martin | Peru | -7.07 | -76.67 | 1036 | 4636 |
| Puerto Meluk | city | Choco | Colombia | 5.22 | -76.94 | 216 | 868 |
| Puerto Meléndez | city | Loreto | Peru | -4.45 | -77.52 | 830 | 296 |
| Puerto Membrillo | city | Zulia | Venezuela | 10.13 | -71.22 | 59 | 71816 |
| Puerto Menacho | city | Santa Cruz | Bolivia | -14.20 | -62.47 | 830 | 149 |
| Puerto Mendes | city | Parana | Brazil | -24.50 | -54.33 | 830 | 230 |
| Puerto Mendez | city | Santa Cruz | Bolivia | -17.30 | -63.32 | 935 | 15642 |
| Puerto Menocchio | city | Misiones | Argentina | -27.06 | -55.45 | 354 | 2200 |
| Puerto Mensabe | city | Los Santos | Panama | 7.77 | -80.17 | 0 | 1936 |
| Puerto Mental | city | Hidalgo | Mexico | 20.79 | -99.23 | 6889 | 6030 |
| Puerto Mercedes | city | El Beni | Bolivia | -13.82 | -65.53 | 830 | 0 |
| Puerto Mercedes | city | Guaviare | Colombia | 1.18 | -72.88 | 830 | 132 |
| Puerto Merchao | city | Apure | Venezuela | 7.63 | -67.25 | 269 | 2426 |
| 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 Metates | city | Michoacan de Ocampo | Mexico | 19.15 | -101.02 | 4189 | 1401 |
| Puerto Mexia | city | Baja California Sur | Mexico | 24.29 | -110.20 | 26 | 340 |
| Puerto Mexico | city | Veracruz | Mexico | 18.13 | -94.44 | 6 | 36333 |
| Puerto Mexico | city | Nuevo Leon | Mexico | 25.18 | -100.71 | 6709 | 626 |
| Puerto Miaria | city | Cusco | Peru | -11.30 | -73.00 | 977 | 280 |
| Puerto Michi Airport | airport | -24.14 | -57.28 | 217 | 0 | ||
| Puerto Mihanovich | city | Alto Paraguay | Paraguay | -20.87 | -57.98 | 219 | 0 |
| Puerto Milagro | city | San Pedro | Paraguay | -23.52 | -57.45 | 144 | 6526 |
| Puerto Militar | city | Presidente Hayes | Paraguay | -23.42 | -57.48 | 154 | 22162 |
| Puerto Mineral | city | Misiones | Argentina | -26.95 | -55.14 | 321 | 1173 |
| Puerto Miniso | city | Oaxaca | Mexico | 16.12 | -98.00 | 0 | 2599 |
| Puerto Minizo | city | Oaxaca | Mexico | 16.12 | -98.00 | 0 | 2599 |
| Puerto Mirabal | city | Amazonas | Venezuela | 5.35 | -67.78 | 337 | 1184 |
| Puerto Miranda | city | Arauca | Colombia | 6.64 | -71.66 | 843 | 1126 |
| Puerto Miranda | city | Caqueta | Colombia | 1.01 | -76.21 | 1669 | 585 |
| Puerto Miranda | city | Orellana | Ecuador | -0.85 | -75.52 | 830 | 220 |
| Puerto Miranda | city | Zulia | Venezuela | 10.78 | -71.56 | 3 | 10594 |
| Puerto Miranda | city | Bolivar | Venezuela | 7.95 | -60.95 | 328 | 0 |
| Puerto Miranda | city | Guarico | Venezuela | 7.90 | -67.47 | 88 | 15092 |
| Puerto Miranda | city | Bolivar | Venezuela | 7.87 | -61.23 | 830 | 0 |
| Puerto Miranda | city | Guarico | Venezuela | 7.91 | -67.45 | 121 | 15560 |
| 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 Misahualli | city | Napo | Ecuador | -1.04 | -77.67 | 1669 | 2054 |
| Puerto Mishquiyacu | city | Amazonas | Peru | -5.78 | -78.35 | 1669 | 5002 |
| Puerto Misiones | city | Cochabamba | Bolivia | -16.85 | -65.05 | 830 | 1192 |
| Puerto Misquiyacu | city | Amazonas | Peru | -5.78 | -78.35 | 1669 | 5002 |
| Puerto Mister | city | Vichada | Colombia | 5.42 | -70.59 | 351 | 109 |
| Puerto Mixteco | city | Oaxaca | Mexico | 17.93 | -97.34 | 7549 | 383 |
| Puerto Moba | city | Chihuahua | Mexico | 26.85 | -106.94 | 8389 | 298 |
| Puerto Mochima | city | Sucre | Venezuela | 10.35 | -64.34 | 830 | 1 |
| Puerto Modesto Mendez | city | Izabal | Guatemala | 15.88 | -89.22 | 118 | 3276 |
| Puerto Mohonero | city | San Luis Potosi | Mexico | 21.83 | -99.95 | 3349 | 1855 |
| Puerto Momotombo | city | Leon | Nicaragua | 12.41 | -86.61 | 177 | 2922 |
| Puerto Monero | city | San Luis Potosi | Mexico | 21.83 | -99.95 | 3349 | 1855 |
| Puerto Monpot | city | Loreto | Peru | -4.18 | -71.97 | 331 | 0 |
| Puerto Montas | city | Los Lagos | Chile | -41.47 | -72.94 | 65 | 65489 |
| Puerto Monte Adentro | city | Caqueta | Colombia | 0.79 | -74.64 | 830 | 447 |
| Puerto Montecarlo | city | Misiones | Argentina | -26.57 | -54.76 | 830 | 16308 |
| Puerto Montes | city | Santa Cruz | Bolivia | -14.30 | -62.35 | 830 | 149 |
| Puerto Montes | city | Santa Cruz | Bolivia | -15.25 | -61.60 | 849 | 149 |
| Puerto Montt | city | Los Lagos | Chile | -41.47 | -72.94 | 65 | 65489 |
| Puerto Montúfar | city | Sucumbios | Ecuador | -0.11 | -76.00 | 830 | 341 |
| Puerto Moorin | city | La Libertad | Peru | -8.40 | -78.89 | 108 | 1434 |
| Puerto Morazán | city | Chinandega | Nicaragua | 12.85 | -87.17 | 6 | 6401 |
| Puerto Morelos | city | Quintana Roo | Mexico | 20.85 | -86.87 | 0 | 16434 |
| Puerto Morena | city | La Libertad | Peru | -7.59 | -78.89 | 1669 | 2629 |
| Puerto Moreno | city | Rio Negro | Argentina | -41.12 | -71.41 | 2683 | 20438 |
| Puerto Moreno | city | Nueva Esparta | Venezuela | 10.98 | -63.81 | 59 | 121640 |
| Puerto Moresby | city | National Capital | Papua New Guinea | -9.46 | 147.19 | 131 | 78947 |
| Puerto Mori | city | La Libertad | Peru | -8.40 | -78.89 | 108 | 1434 |
| Puerto Mori | city | Madre de Dios | Peru | -11.58 | -69.90 | 984 | 210 |
| Puerto Morla Concha | city | Loreto | Peru | -5.28 | -73.22 | 328 | 0 |
| Puerto Morona | city | Morona-Santiago | Ecuador | -2.93 | -77.72 | 1000 | 241 |
| Puerto Morrito | city | Atlantico | Colombia | 10.83 | -74.73 | 19 | 92254 |
| Puerto Morrito | city | Rio San Juan | Nicaragua | 11.62 | -85.08 | 127 | 973 |
| Puerto Morro | city | Guayas | Ecuador | -2.61 | -80.30 | 9 | 4512 |
| Puerto Morroco | city | Meta | Colombia | 3.55 | -73.91 | 2070 | 2384 |
| Puerto Morín | city | La Libertad | Peru | -8.40 | -78.89 | 108 | 1434 |
| 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 Motilones | city | San Martin | Peru | -6.00 | -76.98 | 2509 | 1785 |
| Puerto Motupe | city | Amazonas | Peru | -5.79 | -78.33 | 1669 | 5389 |
| Puerto Murillo | city | Vichada | Colombia | 6.16 | -68.49 | 170 | 47 |
| Puerto Murillo | city | Choco | Colombia | 4.70 | -76.91 | 144 | 369 |
| Puerto Murillo | city | Michoacan de Ocampo | Mexico | 19.70 | -100.83 | 9228 | 2187 |
| Puerto Mutatá | city | Cordoba | Colombia | 7.40 | -75.90 | 6085 | 1735 |
| Puerto Mutis | city | Choco | Colombia | 6.23 | -77.40 | 291 | 4026 |
| Puerto Mutis | city | Veraguas | Panama | 7.92 | -81.06 | 3 | 2217 |
| Puerto Márquez | city | La Paz | Bolivia | -15.80 | -66.12 | 1669 | 0 |
| Puerto Méndez | city | Parana | Brazil | -24.50 | -54.33 | 830 | 230 |
| Puerto México | city | Hidalgo | Mexico | 20.10 | -99.00 | 7549 | 1201 |
| Puerto México | city | Durango | Mexico | 22.97 | -104.24 | 9228 | 447 |