| Name | Country | Feature class | Latitude | Longitude | |
|---|---|---|---|---|---|
3651  | Mantaucu Mantaucu,Mautuco | Ecuador, Azuay Oña > San Felipe De Oña | populated place | S 3° 27′ 52'' | W 79° 9′ 6'' |
3652  | Cordillera de Mauta Cordillera de Mauta | Ecuador, Azuay | mountains | S 3° 31′ 0'' | W 79° 6′ 0'' |
| 3653 | Matilde Hacienda Matilde,Matilde | Ecuador, Guayas Milagro > Chobo | populated place | S 2° 8′ 4'' | W 79° 37′ 21'' |
| 3654 | Cerro Matala Cerro Matala | Ecuador, Zamora Chinchipe Zamora > Zamora | mountain | S 4° 7′ 0'' | W 79° 6′ 0'' |
3655  | Río Matadero  Matadero River,Rio Matadero,Rio Tomebamba,Río Matadero,Río Tomebamba,Tomebamba River | Ecuador, Azuay | stream | S 2° 53′ 33'' | W 79° 1′ 16'' |
| 3656 | Pampas de Mas Vale Pampas de Mas Vale | Ecuador, Guayas | plain(s) | S 2° 24′ 0'' | W 79° 38′ 0'' |
| 3657 | Cerro de Masta Cerro de Masta | Ecuador, Azuay Cantón Girón > Giron | mountain | S 3° 8′ 37'' | W 79° 7′ 27'' |
| 3658 | Masaramupuesto Masaramu,Masaramupuesto | Ecuador, Pastaza Province Pastaza > Montalvo (Andoas) | populated place | S 1° 25′ 49'' | W 76° 49′ 0'' |
| 3659 | Punta Martínez Punta Martinez,Punta Martínez | Ecuador, Galápagos Santa Cruz > Bellavista | point | S 0° 19′ 9'' | W 90° 32′ 53'' |
| 3660 | Cabo Marshall Cabo Marshal,Cabo Marshall | Ecuador, Galápagos Isabela > Tomas De Berlanga (Santo Tomas) | cape | S 0° 1′ 20'' | W 91° 12′ 0'' |
| 3661 | Mariscal Sucre Mariscal Sucre | Ecuador, Guayas Milagro > Mariscal Sucre (Huaques) | populated place | S 2° 6′ 46'' | W 79° 30′ 16'' |
| 3662 | Isla Mariela Isla Mariela | Ecuador, Galápagos | island | S 0° 35′ 55'' | W 91° 5′ 26'' |
| 3663 | Murucumba Maricumba,Murucumba | Ecuador, Guayas El Empalme > Guayas (Pueblo Nuevo) | populated place | S 0° 54′ 45'' | W 79° 38′ 44'' |
| 3664 | Mariana de Jesús Mariana Jesus,Mariana Jesús,Mariana de Jesus,Mariana de Jesús | Ecuador, Pichincha Quito > Calderon (Carapungo) | populated place | S 0° 5′ 0'' | W 78° 25′ 0'' |
| 3665 | María Mercedes Maria Mercedes,María Mercedes,Villa Mercedes | Ecuador, Guayas Cantón Samborondón > Samborondon | populated place | S 1° 57′ 53'' | W 79° 41′ 13'' |
| 3666 | María Eugenia Maria,Maria Eugenia,María,María Eugenia | Ecuador, Guayas Cantón Yaguachi > Gral. Pedro J. Montero (Boliche) | populated place | S 2° 13′ 54'' | W 79° 34′ 52'' |
| 3667 | Punta Mar Bravo Punta Mar Bravo | Ecuador, Guayas | point | S 2° 13′ 0'' | W 81° 0′ 0'' |
| 3668 | Maravilla Hacienda Maravilla,Maravilla | Ecuador, Guayas Alfredo Baquerizo Moreno (Juján) > Alfredo Baquerizo Moreno (Jujan) | populated place | S 1° 55′ 31'' | W 79° 31′ 44'' |
| 3669 | Manzano de Purín Manano,Manzano de Purin,Manzano de Purín | Ecuador, Azuay Cantón Nabón > Las Nieves (Chaya) | populated place | S 3° 18′ 2'' | W 79° 10′ 35'' |
| 3670 | Manila Manila,Manilla | Ecuador, Los Ríos Babahoyo > Pimocha | populated place | S 1° 40′ 27'' | W 79° 29′ 34'' |
| 3671 | Mangosiza Mangosisa,Mangosiza | Ecuador, Morona-Santiago Province Morona > Sevilla Don Bosco | populated place | S 2° 31′ 41'' | W 77° 54′ 6'' |
| 3672 | Cordillera Mangaurquillo Cordillera Mangaurquillo | Ecuador, Loja | mountains | S 4° 3′ 46'' | W 80° 18′ 9'' |
| 3673 | Punta Mandinga Punta Mandinga,Punta de Maria Mandinga | Ecuador, Guayas Guayaquil > Puna | point | S 2° 44′ 19'' | W 79° 54′ 9'' |
| 3674 | Manantiales Manantial,Manantiales | Ecuador, Guayas Palestina > Palestina | populated place | S 1° 37′ 0'' | W 79° 53′ 0'' |
| 3675 | Manantiales Manantiales,Monantiales | Ecuador, Manabí Montecristi > Montecristi | populated place | S 1° 15′ 37'' | W 80° 44′ 22'' |
| 3676 | Punta Mambra Punta Mambra | Ecuador, Guayas | point | S 2° 24′ 0'' | W 80° 46′ 0'' |
| 3677 | Malimpia Malimpia,Matimpi | Ecuador, Esmeraldas Cantón Quinindé > Malimpia | seat of a third-order administrative division | N 0° 24′ 51'' | W 79° 25′ 44'' |
| 3678 | Maldonado Maldonado,Moldonado | Ecuador, Carchi Cantón Tulcán > Maldonado | populated place | N 0° 53′ 47'' | W 78° 6′ 59'' |
| 3679 | Isla Malabrigo Isla Malabrigo | Ecuador, Guayas | island | S 2° 37′ 12'' | W 79° 47′ 13'' |
| 3680 | Malabrigo Malabrigo | Ecuador, Guayas | island | S 2° 25′ 0'' | W 79° 56′ 0'' |
| 3681 | Magro River Magro River,Rio Magro,Rio Pedro Carbo,Río Magro,Río Pedro Carbo | Ecuador, Guayas | stream | S 1° 50′ 52'' | W 80° 5′ 7'' |
| 3682 | Magotilla Magolita,Magotilla | Ecuador, Pichincha Quito > Puellaro | mountain | N 0° 5′ 0'' | W 78° 23′ 0'' |
| 3683 | Magdalena Hacienda Magdalena,Magdalena | Ecuador, Guayas Durán > Eloy Alfaro (Duran) | populated place | S 2° 16′ 58'' | W 79° 49′ 42'' |
| 3684 | Macuma River Macuma River,Rio Macuma,Río Macuma | Ecuador, Morona-Santiago Province | stream | S 2° 45′ 31'' | W 77° 29′ 44'' |
| 3685 | Macuma Jivaro Macuma,Jívaro Macuma,Macuma | Ecuador, Morona-Santiago Province Taisha > Macuma | populated place | S 2° 10′ 4'' | W 77° 39′ 28'' |
| 3686 | Mache River Mache River,Rio Mache,Rio Maiche,Rio Zabalo,Río Mache | Ecuador, | stream | N 0° 12′ 33'' | W 79° 31′ 13'' |
| 3687 | Río Machángara Machangara River,Machángara River,Rio Machangara,Río Machángara | Ecuador, Azuay | stream | S 2° 52′ 0'' | W 78° 55′ 0'' |
| 3688 | Luis Cordero Cordero,Luis Cordero | Ecuador, Cañar Azogues > Luis Cordero | populated place | S 2° 44′ 26'' | W 78° 49′ 13'' |
| 3689 | Llanura de Luisa Grande Llanura de Luisa Grande | Ecuador, Chimborazo Province | plain(s) | S 1° 36′ 0'' | W 78° 45′ 0'' |
| 3690 | Cerro Ludo Cerro Ludo | Ecuador, Azuay Cantón Girón > Giron | mountain | S 3° 7′ 0'' | W 79° 10′ 0'' |
| 3691 | Lucía Hacienda Lucia,Hacienda Lucía,Lucia,Lucía | Ecuador, Guayas Durán > Eloy Alfaro (Duran) | populated place | S 2° 13′ 41'' | W 79° 49′ 35'' |
| 3692 | Lucarquí Lucargni,Lucargní,Lucarque,Lucarqui,Lucarquí | Ecuador, Loja Paltas > Guachanama | populated place | S 4° 7′ 41'' | W 79° 50′ 7'' |
| 3693 | Loyola Loyala,Loyola | Ecuador, El Oro Arenillas > Arenillas | populated place | S 3° 39′ 0'' | W 80° 1′ 0'' |
| 3694 | Los Tres Charanes Los Tres Charanes | Ecuador, Loja | mountains | S 4° 25′ 0'' | W 80° 21′ 0'' |
| 3695 | Los Liberales Los Liberales,Los Libertadores | Ecuador, Manabí Chone > Boyaca | populated place | S 0° 29′ 6'' | W 80° 11′ 42'' |
| 3696 | Los Farallones Farallones,Los Farallones | Ecuador, Guayas | islands | S 2° 43′ 56'' | W 80° 13′ 23'' |
| 3697 | Tres Cerritos Los Cerritos,Tres Cerritos | Ecuador, El Oro Pasaje > Pasaje | populated place | S 3° 19′ 28'' | W 79° 46′ 7'' |
| 3698 | Los Camarones Camarones,Los Camarones | Ecuador, Manabí Jama > Jama | populated place | S 0° 6′ 3'' | W 80° 9′ 15'' |
| 3699 | Los Bosques Los Bosques | Ecuador, El Oro Zaruma > Salvias | mountain | S 3° 37′ 0'' | W 79° 32′ 0'' |
| 3700 | Los Ángeles Angeles,Los Angeles,Los Ángeles | Ecuador, Los Ríos Puebloviejo > Puebloviejo | populated place | S 1° 35′ 33'' | W 79° 30′ 37'' |
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