| MIDGES GRAIN | OS1/21/18/79 |
| MIDLOCK | OS1/21/18/47 |
| MIDLOCK MILL (Ruin) | OS1/21/18/48 |
| MIDLOCK WATER | OS1/21/18/126 |
| MINE HILL | OS1/21/18/90 |
| MINERAL SPRING (Chalybeate) [Rowantree Grain] | OS1/21/18/315 |
| MINERAL SPRING (Sulphureous) [nr Whiteside Hill] | OS1/21/18/314 |
| MINERAL SPRING (Sulphureous) [Tomont Hill] | OS1/21/18/224 |
| MINERS' LIBRARY [Leadhills] | OS1/21/18/87 |
| MIRK CLEUCH | OS1/21/18/61 |
| MIRK GRAIN | OS1/21/18/154 |
| MOAT [Crawford Castle] | OS1/21/18/43 |
| MOORHOUSE | OS1/21/18/88 |
| MOSS WELL | OS1/21/18/252 |
| MOSSHOPE BANK | OS1/21/18/257 |
| MOSSY CLEUCH | OS1/21/18/239 |
| MOSSY DOD | OS1/21/18/128 |
| MOUND [Crookburn] | OS1/21/18/301 |
| MOUND [Normangill] | OS1/21/18/122 |
| MOUNDS [nr Sweetshaw] | OS1/21/18/285 |
