| Code | Name | Region |
|---|---|---|
| ESZIN | Montanchez | CC |
| ESMTV | Montaverner | |
| ESMTC | Montblanc | |
| ESMTP | Montbrio Del Camp | T |
| ESMRM | Montcada I Reixac | |
| ESMNU | Monteagudo | |
| ESMCS | Montealegre Del Castillo | AB |
| ESMTD | Montederramo | OR |
| ESMNF | Montefrio | GR |
| ESMOH | Montehermoso | CC |
| ESMTL | Montellano | SE |
| ESMTY | Montemayor | CO |
| ESZID | Montequinto | LO |
| ESMTE | Monterrei | OR |
| ESMOY | Monterrey | OR |
| ESMSO | Monterroso | LU |
| ESMRU | Monterrubio De La Serena | BA |
| ESMCF | Moncofar | |
| ESZIE | Monda | MA |
| ESMDZ | Mondariz | PO |
| ESMBO | Mondariz-balneario | |
| ESMDJ | Mondejar | |
| ESMND | Mondonedo | LU |
| ESMON | Mondragon | SS |
| ESMFA | Monfarracinos | ZA |
| ESMFR | Monfero | C |
| ESMFL | Monforte De Lemos | LU |
| ESMFT | Monforte Del Cid | |
| ESMFG | Monfrague | CC |
| ESMNY | Monistrol | |
| ESZIK | Monistrol Montserrat | B |
| ESMVA | Monovar | |
| ESMRD | Monreal Del Campo | |
| ESMD6 | Monreal Del Llano | CU |
| ESNRT | Monserrat | |
| ESMGT | Montagut | |
| ESMBN | Montalban | TE |
| ESZII | Moia | |
| ESMJA | Moja | B |
| ESMOJ | Mojacar | |
| ESMJD | Mojados | VA |
| ESQQQ | Molina De Aragon | GU |
| ESMOL | Molina De Segura | MU |
| ESMOC | Molinicos | AB |
| ESMLS | Molins | |
| ESMLR | Molins De Rei | B |
| ESMDX | Molins De Rey | |
| ESMBM | Molla Del Penedes | |
| ESMOP | Molledo Portolin | S |
| ESMBC | Mollerusa |