| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Mac Mac | city | Piura | Peru | -5.74 | -79.62 | 7903 | 2531 |
| Macacará | city | Piura | Peru | -4.91 | -80.86 | 141 | 4279 |
| Macacará Hacienda | city | Piura | Peru | -4.91 | -80.86 | 141 | 4279 |
| Macora | city | Piura | Peru | -4.78 | -79.78 | 6190 | 2762 |
| Macunio | city | Piura | Peru | -4.50 | -80.74 | 1669 | 1746 |
| Macupillo | city | Piura | Peru | -4.48 | -80.74 | 1669 | 1628 |
| Madre de Dios | city | Piura | Peru | -4.59 | -80.46 | 390 | 1598 |
| Mal Paso | city | Piura | Peru | -4.48 | -79.83 | 2509 | 4974 |
| Malacasi | city | Piura | Peru | -5.34 | -79.86 | 830 | 1978 |
| Malache | city | Piura | Peru | -4.99 | -79.72 | 7050 | 3623 |
| Malingas | city | Piura | Peru | -4.97 | -80.27 | 337 | 7241 |
| Malingas Hacienda | city | Piura | Peru | -4.97 | -80.27 | 337 | 7241 |
| Malinguitas | city | Piura | Peru | -5.03 | -80.26 | 364 | 8598 |
| Malinguítas Hacienda | city | Piura | Peru | -5.03 | -80.26 | 364 | 8598 |
| Mallancoca | city | Piura | Peru | -4.55 | -79.79 | 4248 | 7624 |
| Mallares | city | Piura | Peru | -4.87 | -80.77 | 180 | 1781 |
| Mallares Hacienda | city | Piura | Peru | -4.87 | -80.77 | 180 | 1781 |
| Mallarito | city | Piura | Peru | -4.87 | -80.72 | 213 | 27977 |
| Mallarito Hacienda | city | Piura | Peru | -4.87 | -80.72 | 213 | 27977 |
| Mallaritos | city | Piura | Peru | -4.87 | -80.72 | 213 | 27977 |
| Mamallaco | city | Piura | Peru | -5.49 | -79.71 | 1669 | 2533 |
| Mamayaco | city | Piura | Peru | -5.49 | -79.71 | 1669 | 2533 |
| Mamayaco Hacienda | city | Piura | Peru | -5.49 | -79.71 | 1669 | 2533 |
| Mambiuque | city | Piura | Peru | -5.19 | -79.87 | 1026 | 5103 |
| Mambluque | city | Piura | Peru | -5.19 | -79.87 | 1026 | 5103 |
| Mambluque Ciudad | city | Piura | Peru | -5.19 | -79.87 | 1026 | 5103 |
| Manco Inca | city | Piura | Peru | -4.90 | -80.35 | 341 | 5458 |
| Mancocur | city | Piura | Peru | -5.40 | -79.36 | 8389 | 2927 |
| Mancora | city | Piura | Peru | -4.11 | -81.05 | 147 | 5251 |
| Mancora Hacienda | city | Piura | Peru | -4.11 | -81.05 | 147 | 5251 |
| Mancucur | city | Piura | Peru | -5.40 | -79.36 | 8389 | 2927 |
| Mancucur Ciudad | city | Piura | Peru | -5.40 | -79.36 | 8389 | 2927 |
| Mangali | city | Piura | Peru | -5.18 | -79.45 | 7752 | 6981 |
| Mangamanga | city | Piura | Peru | -5.32 | -79.90 | 830 | 1637 |
| Mangamanguilla | city | Piura | Peru | -5.32 | -79.86 | 830 | 1950 |
| Mangas | city | Piura | Peru | -4.67 | -79.70 | 5255 | 720 |
| Mango | city | Piura | Peru | -4.55 | -79.93 | 2591 | 1448 |
| Manirca | city | Piura | Peru | -5.41 | -79.57 | 7549 | 5809 |
| Mantequillera | city | Piura | Peru | -5.43 | -79.73 | 1095 | 3575 |
| Manuela | city | Piura | Peru | -5.40 | -80.75 | 19 | 6893 |
| Maran | city | Piura | Peru | -4.76 | -80.54 | 413 | 33897 |
| Maravilla | city | Piura | Peru | -5.23 | -79.94 | 830 | 9435 |
| Maray | city | Piura | Peru | -4.72 | -80.18 | 1000 | 5722 |
| Maray | city | Piura | Peru | -5.19 | -79.93 | 830 | 6183 |
| Maray | city | Piura | Peru | -4.97 | -79.95 | 5383 | 4943 |
| Maray | city | Piura | Peru | -4.91 | -79.76 | 8389 | 3468 |
| Maray | city | Piura | Peru | -4.90 | -79.54 | 7125 | 2810 |
| Maray | city | Piura | Peru | -5.19 | -79.68 | 5029 | 5699 |
| Maray | city | Piura | Peru | -5.63 | -79.43 | 7549 | 2657 |
| Maray Pampa | city | Piura | Peru | -5.60 | -79.58 | 6167 | 2722 |
| Maraypampa | city | Piura | Peru | -5.35 | -79.64 | 5029 | 4859 |
| Marcavelica | city | Piura | Peru | -4.88 | -80.70 | 213 | 37089 |
| Marcavelica Hacienda | city | Piura | Peru | -4.88 | -80.70 | 213 | 37089 |
| Marcelo | city | Piura | Peru | -4.33 | -80.50 | 964 | 745 |
| Marceto | city | Piura | Peru | -4.33 | -80.50 | 964 | 745 |
| Mardelo | city | Piura | Peru | -4.33 | -80.50 | 964 | 745 |
| Margarita | city | Piura | Peru | -4.92 | -79.94 | 6988 | 5583 |
| Margarita | city | Piura | Peru | -4.80 | -80.63 | 272 | 18547 |
| Marilcas | city | Piura | Peru | -5.05 | -79.86 | 5426 | 8166 |
| Marilcas Ciudad | city | Piura | Peru | -5.05 | -79.86 | 5426 | 8166 |
| Marmas | city | Piura | Peru | -4.60 | -79.85 | 5869 | 7393 |
| Marmas Ciudad | city | Piura | Peru | -4.60 | -79.85 | 5869 | 7393 |
| Martinez | city | Piura | Peru | -4.56 | -80.49 | 403 | 1611 |
| Martínez | city | Piura | Peru | -4.58 | -80.52 | 830 | 1687 |
| Mata Caballo | city | Piura | Peru | -5.63 | -80.85 | 3 | 6 |
| Mata Moro | city | Piura | Peru | -4.89 | -80.74 | 196 | 8629 |
| Matacaballo | city | Piura | Peru | -5.63 | -80.85 | 3 | 6 |
| Matala | city | Piura | Peru | -4.72 | -79.79 | 5869 | 1390 |
| Matalacas | city | Piura | Peru | -4.87 | -79.77 | 7103 | 3439 |
| Matalo | city | Piura | Peru | -4.87 | -79.77 | 7103 | 3439 |
| Matanza | city | Piura | Peru | -5.21 | -80.09 | 830 | 2561 |
| Matara | city | Piura | Peru | -5.18 | -79.50 | 8579 | 8641 |
| Maylan | city | Piura | Peru | -5.14 | -79.63 | 7549 | 6533 |
| Maza Cortada | city | Piura | Peru | -4.93 | -79.55 | 6095 | 3427 |
| Mechato | city | Piura | Peru | -5.30 | -80.72 | 19 | 11777 |
| Mejico | city | Piura | Peru | -5.79 | -79.55 | 7903 | 2533 |
| Mejico Chico | city | Piura | Peru | -5.18 | -79.95 | 830 | 7979 |
| Melco | city | Piura | Peru | -5.80 | -79.55 | 7549 | 2533 |
| Mi Polita | city | Piura | Peru | -4.88 | -80.57 | 275 | 22635 |
| Milla 6 | city | Piura | Peru | -4.58 | -81.25 | 154 | 664 |
| Milla 7 | city | Piura | Peru | -4.57 | -81.22 | 269 | 1701 |
| Mina Bayobar | city | Piura | Peru | -6.15 | -80.83 | 3 | 0 |
| Minas | city | Piura | Peru | -4.87 | -79.79 | 7926 | 3507 |
| Miniatura | city | Piura | Peru | -5.28 | -80.73 | 22 | 10923 |
| Miniatura Hacienda | city | Piura | Peru | -5.28 | -80.73 | 22 | 10923 |
| Mirador | city | Piura | Peru | -4.85 | -80.78 | 209 | 2162 |
| Miraflores | city | Piura | Peru | -4.91 | -80.87 | 131 | 5445 |
| Miraflores | city | Piura | Peru | -4.85 | -80.18 | 879 | 6109 |
| Miraflores | city | Piura | Peru | -4.84 | -80.69 | 239 | 41643 |
| Miraflores | city | Piura | Peru | -4.83 | -80.17 | 944 | 6076 |
| Miraflores | city | Piura | Peru | -5.16 | -80.61 | 121 | 7874 |
| Miraflores | city | Piura | Peru | -5.42 | -80.74 | 13 | 4843 |
| Miraflores | city | Piura | Peru | -4.86 | -80.19 | 830 | 6109 |
| Miraflores Hacienda | city | Piura | Peru | -5.42 | -80.74 | 13 | 4843 |
| Miraflores Hacienda | city | Piura | Peru | -4.91 | -80.87 | 131 | 5445 |
| Miraflores Hacienda | city | Piura | Peru | -5.16 | -80.61 | 121 | 7874 |
| Miramar | city | Piura | Peru | -5.52 | -80.82 | 3 | 1782 |
| Miramar | city | Piura | Peru | -4.87 | -81.10 | 6 | 7430 |
| Miscas | city | Piura | Peru | -5.12 | -79.87 | 3349 | 7842 |
| Mishca | city | Piura | Peru | -5.20 | -79.43 | 8457 | 6918 |
| Mishca Ciudad | city | Piura | Peru | -5.20 | -79.43 | 8457 | 6918 |
| Misquis | city | Piura | Peru | -4.98 | -79.99 | 4189 | 5789 |
| Mitopampa | city | Piura | Peru | -5.33 | -79.48 | 9228 | 6769 |
| Mitupampa | city | Piura | Peru | -5.32 | -79.50 | 9596 | 7079 |
| Mitupampa Ciudad | city | Piura | Peru | -5.32 | -79.50 | 9596 | 7079 |
| Mocara Hacienda | city | Piura | Peru | -5.30 | -80.72 | 19 | 11777 |
| Mocará | city | Piura | Peru | -5.30 | -80.72 | 19 | 11777 |
| Mogollon | city | Piura | Peru | -4.58 | -80.94 | 2509 | 9265 |
| Molina | city | Piura | Peru | -5.77 | -79.69 | 2509 | 2317 |
| Molino | city | Piura | Peru | -5.08 | -80.63 | 137 | 66645 |
| Molino Hacienda | city | Piura | Peru | -5.08 | -80.63 | 137 | 66645 |
| Molle | city | Piura | Peru | -5.53 | -79.46 | 9228 | 3354 |
| Molulo | city | Piura | Peru | -5.57 | -79.61 | 5137 | 2533 |
| Monte Abierto | city | Piura | Peru | -4.87 | -80.92 | 157 | 9837 |
| Monte Abierto Hacienda | city | Piura | Peru | -4.87 | -80.92 | 157 | 9837 |
| Monte Azul | city | Piura | Peru | -5.31 | -80.07 | 416 | 1639 |
| Monte Castillo | city | Piura | Peru | -5.28 | -80.71 | 19 | 8092 |
| Monte Grande | city | Piura | Peru | -5.37 | -80.69 | 32 | 12325 |
| Monte Grande | city | Piura | Peru | -5.65 | -79.40 | 5190 | 2694 |
| Monte Grande | city | Piura | Peru | -4.47 | -81.05 | 830 | 11473 |
| Monte Lima | city | Piura | Peru | -4.86 | -80.94 | 160 | 9286 |
| Monte Redondo | city | Piura | Peru | -5.41 | -80.71 | 26 | 7455 |
| Monte Rojas | city | Piura | Peru | -4.50 | -81.08 | 830 | 11473 |
| Monte Señor | city | Piura | Peru | -4.86 | -80.94 | 167 | 9286 |
| Monte Sullón | city | Piura | Peru | -5.28 | -80.69 | 29 | 5084 |
| Monte Suyón | city | Piura | Peru | -5.28 | -80.69 | 29 | 5084 |
| Monte Viejo | city | Piura | Peru | -5.36 | -80.76 | 19 | 15325 |
| Monte Viejo Hacienda | city | Piura | Peru | -5.36 | -80.76 | 19 | 15325 |
| Monte de Zorritos | city | Piura | Peru | -4.17 | -80.95 | 400 | 6074 |
| Monte de los Padres | city | Piura | Peru | -5.12 | -80.04 | 830 | 12966 |
| Monte de los Padres Hacienda | city | Piura | Peru | -5.12 | -80.04 | 830 | 12966 |
| Montecillo | city | Piura | Peru | -4.69 | -80.46 | 830 | 19914 |
| Montelima | city | Piura | Peru | -4.86 | -80.94 | 160 | 9286 |
| Montelima Hacienda | city | Piura | Peru | -4.86 | -80.94 | 160 | 9286 |
| Montenegro | city | Piura | Peru | -4.86 | -80.63 | 259 | 46135 |
| Montenegro Hacienda | city | Piura | Peru | -4.86 | -80.63 | 259 | 46135 |
| Montero | city | Piura | Peru | -4.63 | -79.83 | 5029 | 8657 |
| Monteron | city | Piura | Peru | -4.87 | -80.80 | 170 | 3067 |
| Monteverde | city | Piura | Peru | -4.92 | -80.90 | 118 | 6028 |
| Monteverde | city | Piura | Peru | -5.23 | -80.63 | 111 | 1555 |
| Monteverde Hacienda | city | Piura | Peru | -5.23 | -80.63 | 111 | 1555 |
| Morante | city | Piura | Peru | -5.63 | -80.12 | 830 | 2980 |
| More | city | Piura | Peru | -5.04 | -79.68 | 10190 | 4005 |
| Morena | city | Piura | Peru | -5.58 | -79.43 | 7864 | 2597 |
| Moro Moro | city | Piura | Peru | -4.53 | -80.69 | 1026 | 1606 |
| Morocho | city | Piura | Peru | -4.49 | -79.99 | 1984 | 2972 |
| Morro | city | Piura | Peru | -4.53 | -81.10 | 830 | 11473 |
| Morroponcito | city | Piura | Peru | -5.31 | -79.92 | 830 | 3545 |
| Morropón | city | Piura | Peru | -5.19 | -79.97 | 830 | 8709 |
| Moscones | city | Piura | Peru | -4.52 | -80.88 | 1814 | 4613 |
| Mostaza | city | Piura | Peru | -4.49 | -79.68 | 6811 | 1046 |
| Mostazas | city | Piura | Peru | -4.49 | -79.68 | 6811 | 1046 |
| Mostazas Ciudad | city | Piura | Peru | -4.49 | -79.68 | 6811 | 1046 |
| Mostrante | city | Piura | Peru | -4.92 | -80.00 | 5029 | 5013 |
| Moza | city | Piura | Peru | -5.09 | -79.86 | 5905 | 8469 |
| Mulero | city | Piura | Peru | -4.68 | -79.89 | 2591 | 5709 |
| Muleros | city | Piura | Peru | -4.68 | -79.89 | 2591 | 5709 |
| Munchuruco | city | Piura | Peru | -4.96 | -79.30 | 5311 | 2134 |
| Mundaca | city | Piura | Peru | -5.25 | -80.65 | 88 | 1800 |
| Munuela | city | Piura | Peru | -5.40 | -80.75 | 19 | 6893 |
| Murciélagos | city | Piura | Peru | -4.43 | -80.57 | 895 | 745 |
| Musca | city | Piura | Peru | -4.78 | -79.99 | 5954 | 6697 |
| Muscas | city | Piura | Peru | -5.06 | -79.52 | 11177 | 4351 |
| Máncora Chico | city | Piura | Peru | -4.11 | -81.07 | 32 | 5023 |
| Máncora Puerto | city | Piura | Peru | -4.11 | -81.07 | 32 | 5023 |