UpAlphabetical listing of Places in San Luis
| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
| Manantial | city | San Luis | Argentina | -32.80 | -65.15 | 2739 | 745 |
| Manantial Blanco | city | San Luis | Argentina | -32.90 | -65.80 | 4189 | 106 |
| Manantiales | city | San Luis | Argentina | -32.65 | -65.62 | 3589 | 442 |
| Maroma Fallata | city | San Luis | Argentina | -35.84 | -66.57 | 1082 | 19 |
| Maroma de Olmedo | city | San Luis | Argentina | -35.32 | -66.47 | 1161 | 13 |
| Maroma de Paez | city | San Luis | Argentina | -35.47 | -66.49 | 1154 | 14 |
| Martin de Loyola | city | San Luis | Argentina | -35.71 | -66.35 | 1115 | 0 |
| Medanito | city | San Luis | Argentina | -32.90 | -66.78 | 2509 | 0 |
| Melagro | city | San Luis | Argentina | -33.13 | -66.36 | 2509 | 624 |
| Mercedes | city | San Luis | Argentina | -33.67 | -65.46 | 1669 | 10650 |
| Merlo | city | San Luis | Argentina | -32.34 | -65.01 | 2828 | 11117 |
| Molino Chico | city | San Luis | Argentina | -33.03 | -65.48 | 3349 | 613 |
| Mosmota | city | San Luis | Argentina | -33.67 | -66.97 | 1669 | 956 |
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