| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Mahave | city | La Rioja | Spain | 42.37 | -2.75 | 1856 | 7407 |
| Manjarres | city | La Rioja | Spain | 42.39 | -2.68 | 2509 | 3086 |
| Mansilla | city | La Rioja | Spain | 42.15 | -2.95 | 3349 | 82 |
| Mansilla de la Sierra | city | La Rioja | Spain | 42.15 | -2.95 | 3349 | 82 |
| Manzanares de Rioja | city | La Rioja | Spain | 42.40 | -2.90 | 2641 | 2571 |
| Matute | city | La Rioja | Spain | 42.30 | -2.80 | 2509 | 2004 |
| Medrano | city | La Rioja | Spain | 42.38 | -2.55 | 1952 | 3543 |
| Montalbo en Cameros | city | La Rioja | Spain | 42.26 | -2.48 | 3349 | 482 |
| Montalvo en Cameros | city | La Rioja | Spain | 42.26 | -2.48 | 3349 | 482 |
| Montemediano | city | La Rioja | Spain | 42.20 | -2.67 | 3389 | 537 |
| Morales | city | La Rioja | Spain | 42.43 | -3.01 | 2595 | 3390 |
| Muniella | city | La Rioja | Spain | 42.19 | -2.30 | 2673 | 292 |
| Munilla | city | La Rioja | Spain | 42.19 | -2.30 | 2673 | 292 |
| Muriello de Río Leza | city | La Rioja | Spain | 42.40 | -2.32 | 1669 | 4532 |
| Murillo | city | La Rioja | Spain | 42.40 | -2.32 | 1669 | 4532 |
| Murillo de Calahorra | city | La Rioja | Spain | 42.34 | -1.99 | 984 | 11373 |
| Murillo de Rio Leza | city | La Rioja | Spain | 42.40 | -2.32 | 1669 | 4532 |
| Muro de Aguas | city | La Rioja | Spain | 42.13 | -2.11 | 3349 | 1071 |
| Muro de Ambas Aguas | city | La Rioja | Spain | 42.13 | -2.11 | 3349 | 1071 |
| Muro en Cameros | city | La Rioja | Spain | 42.23 | -2.53 | 3349 | 302 |