| MAILARRETA / MAIRUILARRIETA HEGO | Cromlech | Nafarroa | OTSONDO – IPARLA | Exacta (~25m) | | | |
| MAIOLATZ | Fondo de cabaña | | ARALAR | Exacta (~25m) | Nahiko egoera onean | | |
| MAIRU-HARRI | Dolmen | Nafarroa | LEGATE - ALKURRUNTZ | Exacta (~25m) | | | |
| Mairubaratzeta | Cromlech | Sunbilla | ERAKURRI - MENDAUR | Exacta (~25m) | | | |
| Mairubaratzeta | Cista | Sunbilla | ERAKURRI - MENDAUR | Exacta (~25m) | | | |
| MAIRUETXEA (GAXTE-ENEA) | Dolmen | | ANDIAMENDI - MOKORRETA | Exacta (~25m) | | | |
| MAIRUILARRIETA | Cromlech | Nafarroa | OTSONDO – IPARLA | Exacta (~25m) | | | |
| MAISTRUGAIN | Menhir | Nafarroa | OTSONDO – IPARLA | Exacta (~25m) | | | |
| MAISTRUGAIN | Cromlech | Nafarroa | OTSONDO – IPARLA | Exacta (~25m) | | | |
| MAISTRUGAIN EKIALDE | Cromlech | Nafarroa | OTSONDO – IPARLA | Exacta (~25m) | | | |
| MAISTRUGAIN MENDEBAL | Cromlech | Nafarroa | OTSONDO – IPARLA | Exacta (~25m) | Nahiko egoera onean | | |
| MAITZEGUR (Maitzur) | Dolmen | Nafarroa | BALENKALEKU - TXARADIGORRI | Exacta (~25m) | Egoera onean | | |
| MAIZEGUR | Túmulo | Nafarroa | BALENKALEKU - TXARADIGORRI | Aproximada (~200m) | | | |
| MAJADA SARBIL hego 1 | Túmulo | Etxauri | SALDISE | Exacta (~25m) | | | |
| MAJADA SARBIL mendebalde | Túmulo | Etxauri | SALDISE | Exacta (~25m) | | | |
| MAJADA DE CONTRASTA | Campo tumular | Araba | SIERRA DE ENTZIA | | | | |
| MAJADA del FRANCES | Túmulo | Huesca | IBÓN de ESTANES | Exacta (~25m) | Egoera onean | | |
| Majada Sarbil | Dolmen | Etxauri | SALDISE | Exacta (~25m) | | | |
| MAJADA SARBIL ekialde 1 | Túmulo | Etxauri | SALDISE | Exacta (~25m) | | | |
| MAJADA SARBIL ekialde 2 | Túmulo | Etxauri | SALDISE | Exacta (~25m) | | | |
| Majada Sarbil hego 2 | Túmulo | Etxauri | SALDISE | Exacta (~25m) | | | |
| MAJADAS DE ALLO | Túmulo | Nafarroa | URBASA | Exacta (~25m) | | | |
| Majadas de Allo 1 | Fondo de cabaña | | URBASA | Exacta (~25m) | | | |
| MAKILLIPURDI (Mutilona) | Dolmen | Zubieta Malerreka | ERAKURRI - MENDAUR | Exacta (~25m) | | | |
| MAL PASO | Cromlech | | Valle de CANFRANC | Exacta (~25m) | | | |
| MAL PASO | Dolmen | | Valle de CANFRANC | Exacta (~25m) | Oso kaltetuta | | |
| MALETE | Menhir | Bera | LARRUN | Exacta (~25m) | | | |
| MALKAXKO | Cista | Nafarroa | ANDIA | Exacta (~25m) | Nahiko egoera onean | | |
| Malkaxko | Cromlech | Lezaun | ANDIA | Exacta (~25m) | | | |
| MALKAXKO 3 | Túmulo anular | Andia | ANDIA | Exacta (~25m) | | | |
| MALKAXKO 1 hego | Túmulo anular | Andia | ANDIA | Exacta (~25m) | | | |
| MALKAXKO 2 ipar | Túmulo anular | Andia | ANDIA | Exacta (~25m) | | | |
| MALKORGAÑA | Túmulo | | ERAKURRI - MENDAUR | Exacta (~25m) | | | |
| MALKORGAÑA | Dolmen | Nafarroa | ERAKURRI - MENDAUR | Exacta (~25m) | | | |
| MALKORRA | Menhir | Araba | SIERRAS DE ELGEA - URKILLA | Exacta (~25m) | | | |
| MALKORRI 1 | Fondo de cabaña | Gipuzkoa | ARALAR | Exacta (~25m) | Nahiko egoera onean | | |
| MALKORRI 2 | Fondo de cabaña | Gipuzkoa | ARALAR | Exacta (~25m) | Nahiko egoera onean | | |
| MALLA | Túmulo | Gipuzkoa | AITZKORRI - URBIA | Exacta (~25m) | | | |
| MALLO BLANCO | Fondo de cabaña | | Valles de ECHO - AGUAS TUERTAS | Exacta (~25m) | | | |
| MALLO BLANCO 2 ESTE | Túmulo | | Valles de ECHO - AGUAS TUERTAS | Exacta (~25m) | | | |
| MALLO BLANCO | Dolmen | Huesca | Valles de ECHO - AGUAS TUERTAS | Exacta (~25m) | | | |
| MALLO BLANCO | Menhir | Huesca | Valles de ECHO - AGUAS TUERTAS | Exacta (~25m) | | | |
| MALLO BLANCO | Cromlech | Huesca | Valles de ECHO - AGUAS TUERTAS | Exacta (~25m) | | | |
| MALLO BLANCO 1 OESTE | Túmulo | Huesca | Valles de ECHO - AGUAS TUERTAS | Exacta (~25m) | | | |
| MALLO BLANCO SUR | Cromlech | Huesca | Valles de ECHO - AGUAS TUERTAS | Exacta (~25m) | | | |
| MALLURKETA | Menhir | | BERTIZ - ARANA | Exacta (~25m) | | | |
| MALLURKETA | Dolmen | Bertizarana | BERTIZ - ARANA | Exacta (~25m) | Oso kaltetuta | | |
| MALO 1 mendebal | Dolmen | Nafarroa | ERAKURRI - MENDAUR | Exacta (~25m) | | | |
| MALO 2 ekialde | Dolmen | Nafarroa | ERAKURRI - MENDAUR | Exacta (~25m) | | | |
| Malo 3 | Dolmen | Nafarroa | ERAKURRI - MENDAUR | Exacta (~25m) | | | |
| Maloa | Dolmen | Nafarroa | ERAKURRI - MENDAUR | Exacta (~25m) | | | |
| MALOCALAÑA | Cista | Burgos | Ezezaguna | Exacta (~25m) | Oso kaltetuta | | |
| MALOKO HARRIA | Dolmen | Nafarroa | ERAKURRI - MENDAUR | Exacta (~25m) | | | |
| MANDALE | Cromlech | Bera | XOLDOKOGAÑA - IBARDIN | Exacta (~25m) | | | |
| MANDALE | Túmulo | | XOLDOKOGAÑA - IBARDIN | Exacta (~25m) | | | |
| MANDUBI ZELAIA | Dolmen | Ezkio-Itsaso | MURUMENDI | Exacta (~25m) | Oso kaltetuta | | |
| MANGONES 4 | Túmulo anular | Andia | ANDIA | Exacta (~25m) | | | |
| Manzuruturri 1 oeste | Campo tumular | Arraia-Maeztu | MONTES DE ITURRIETA | Exacta (~25m) | | | |
| Manzuruturri 2 este | Túmulo | Arraia-Maeztu | MONTES DE ITURRIETA | Exacta (~25m) | | | |
| MANZURUTURRI 3 | Túmulo | | MONTES DE ITURRIETA | Exacta (~25m) | | | |
| MANZURUTURRI 4 | Túmulo | | MONTES DE ITURRIETA | Exacta (~25m) | | | |
| MARAMENDI hego | Dolmen | Beizama | MURUMENDI | Exacta (~25m) | | | |
| MARAMENDI ipar | Dolmen | Beizama | MURUMENDI | Exacta (~25m) | | | |
| MARCANTÓN norte | Otro / dudoso / desconocido | | Valles de ECHO - AGUAS TUERTAS | Aproximada (~200m) | | | |
| MARCUERO | Dolmen | Goñerri | ANDIA | Exacta (~25m) | | | |
| MARIBIDAURRE | Dolmen | Gipuzkoa | BRINKOLA - ZEGAMA | Exacta (~25m) | Oso kaltetuta | | |
| MARIKUTX I | Túmulo | Gipuzkoa | IZARRAITZ | Exacta (~25m) | | | |
| MARIKUTX II | Túmulo | Gipuzkoa | IZARRAITZ | Exacta (~25m) | | | |
| MARILUXEKO HARRI (Armiaga) | Dolmen | | BEORLEGI | | | | |
| MARIOLA | Cista | Astigarraga | TXORITOKIETA-SANTIAGOMENDI | Exacta (~25m) | Oso kaltetuta | | |
| MARIXKO | Otro / dudoso / desconocido | Nafarroa | LARRUN | Exacta (~25m) | | | |
| MARKALAGAIN | Menhir | | LA SOLANA | Exacta (~25m) | | | |
| MAROTO | Túmulo | Gipuzkoa | ELGEA - ARTIA | Aproximada (~200m) | | | |
| MARTINLEZE 1 | Dolmen | Goñerri | ANDIA | Exacta (~25m) | | | |
| MARTINLEZE 2 | Dolmen | Goñerri | ANDIA | Exacta (~25m) | | | |
| MARTINZARRETA | Túmulo | Asparrena | SIERRAS DE ELGEA - URKILLA | Aproximada (~200m) | Nahiko egoera onean | | |
| MAS DE ABAD | Menhir | Huesca | SIERRA DE CARRODILLA | Exacta (~25m) | Nahiko egoera onean | | |
| MAS DE ABAD | Dolmen | | SIERRA DE CARRODILLA | Exacta (~25m) | Nahiko egoera onean | | |
| MAS DE BALON | Dolmen | | SIERRA DE CARRODILLA | Exacta (~25m) | Oso kaltetuta | | |
| MASPÊTRE 3 | Dolmen | Bearn | ASPE | Exacta (~25m) | Nahiko egoera onean | | |
| MASPÊTRE 4 | Dolmen | Bearn | ASPE | Exacta (~25m) | Nahiko egoera onean | | |
| MATA DEL CLEVE | Dolmen | Nafarroa | ILLÓN | Exacta (~25m) | | | |
| MATARIA | Túmulo | | MATARIA - LINDUX | Exacta (~25m) | | | |
| MATARIA* | Cromlech | | MATARIA - LINDUX | Exacta (~25m) | | | |
| MATESTAJE | Campo tumular | Araba | SIERRA DE BOBEDA | | | | |
| MATRAKOLA | Dolmen | Nafarroa | ABARTAN - SAIOA | Exacta (~25m) | | | |
| MATXETA | Dolmen | Nafarroa | LEGATE - ALKURRUNTZ | Exacta (~25m) | | | |
| MATXITXANE (Intsausti) | Dolmen | Gipuzkoa | ARALAR | Exacta (~25m) | | | |
| MAUHOURAT | Dolmen | | OSSAU | Exacta (~25m) | | | |
| MAULITZ | Túmulo | Nafarroa | SOALAR – AUTZA | Exacta (~25m) | | | |
| MAURKETA | Túmulo | Gipuzkoa | ELOSUA - PLAZENTZIA | Exacta (~25m) | | | |
| MAZA PANDO 1 | Túmulo | Bizkaia | BALGERRI | Aproximada (~200m) | | | |
| MAZA PANDO 2 | Dolmen | Bizkaia | BALGERRI | Aproximada (~200m) | | | |
| MAZELARRA | Túmulo | Nafarroa | BELAGOA | Exacta (~25m) | Oso kaltetuta | | |
| MAZELARRA | Menhir | Nafarroa | BELAGOA | Exacta (~25m) | Oso kaltetuta | | |
| Meaga | Túmulo | | MEAGA | Exacta (~25m) | | | |
| Meakako Gaña | Túmulo | | GOIZUETA-ARTIKUTZA-ARANTZA | Exacta (~25m) | | | |
| MEAKAKO LEPOA * | Dolmen | Nafarroa | ALBA - KINTO | Exacta (~25m) | | | |
| MEATSEKO BIZKARRA | Menhir | | MONDARRAIN - ARTZAMENDI | Exacta (~25m) | | | |
| MEATSEKO BIZKARRA | Cromlech | | MONDARRAIN - ARTZAMENDI | Exacta (~25m) | | | |
