| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Mabel | city | Oregon | United States | 44.21 | -122.83 | 830 | |
| Macksburg | city | Oregon | United States | 45.21 | -122.66 | 200 | |
| Macleay | city | Oregon | United States | 44.91 | -122.89 | 830 | |
| Madras | city | Oregon | United States | 44.63 | -121.13 | 2509 | |
| Malheur City (historical) | city | Oregon | United States | 44.41 | -117.72 | 4189 | |
| Malin | city | Oregon | United States | 42.01 | -121.41 | 4189 | |
| Malone | city | Oregon | United States | 42.02 | -121.56 | 4189 | |
| Manhattan Beach | city | Oregon | United States | 45.63 | -123.94 | 65 | |
| Manning | city | Oregon | United States | 45.66 | -123.16 | 396 | |
| Manzanita | city | Oregon | United States | 45.72 | -123.94 | 62 | |
| Mapleton | city | Oregon | United States | 44.03 | -123.86 | 200 | |
| Maplewood | city | Oregon | United States | 45.47 | -122.73 | 830 | |
| Marcola | city | Oregon | United States | 44.17 | -122.86 | 830 | |
| Marial | city | Oregon | United States | 42.71 | -123.89 | 830 | |
| Marion | city | Oregon | United States | 44.75 | -122.94 | 328 | |
| Marion Forks | city | Oregon | United States | 44.62 | -121.95 | 2509 | |
| Marlene Village | city | Oregon | United States | 45.52 | -122.82 | 200 | |
| Marmot | city | Oregon | United States | 45.40 | -122.12 | 1197 | |
| Marquam | city | Oregon | United States | 45.07 | -122.69 | 298 | |
| Marquam Hill | city | Oregon | United States | 45.50 | -122.69 | 830 | |
| Marshland | city | Oregon | United States | 46.11 | -123.29 | 830 | |
| Marylhurst | city | Oregon | United States | 45.40 | -122.65 | 200 | |
| Maupin | city | Oregon | United States | 45.18 | -121.08 | 997 | |
| Maxville | city | Oregon | United States | 45.75 | -117.56 | 4189 | |
| Mayger | city | Oregon | United States | 46.16 | -123.11 | 200 | |
| Mayville | city | Oregon | United States | 45.08 | -120.19 | 3349 | |
| Maywood Park | city | Oregon | United States | 45.55 | -122.56 | 206 | |
| McCoy | city | Oregon | United States | 45.04 | -123.22 | 196 | |
| McCredie Springs | city | Oregon | United States | 43.71 | -122.29 | 1998 | |
| McDonald | city | Oregon | United States | 45.59 | -120.41 | 830 | |
| McEwen | city | Oregon | United States | 44.70 | -118.10 | 4189 | |
| McKay | city | Oregon | United States | 45.50 | -118.62 | 1998 | |
| McKee | city | Oregon | United States | 45.10 | -122.81 | 170 | |
| McKee Bridge | city | Oregon | United States | 42.13 | -123.08 | 2047 | |
| McKenzie Bridge | city | Oregon | United States | 44.18 | -122.16 | 1669 | |
| McKinley | city | Oregon | United States | 43.19 | -124.03 | 200 | |
| McLeod | city | Oregon | United States | 42.66 | -122.69 | 1669 | |
| McMinnville | city | Oregon | United States | 45.21 | -123.20 | 108 | |
| McNary | city | Oregon | United States | 45.92 | -119.29 | 830 | |
| McNulty | city | Oregon | United States | 45.84 | -122.84 | 98 | |
| Meacham | city | Oregon | United States | 45.51 | -118.42 | 4189 | |
| Meda | city | Oregon | United States | 45.15 | -123.92 | 200 | |
| Medford | city | Oregon | United States | 42.33 | -122.88 | 1669 | |
| Medical Springs | city | Oregon | United States | 45.02 | -117.63 | 3487 | |
| Mehama | city | Oregon | United States | 44.79 | -122.62 | 830 | |
| Melrose | city | Oregon | United States | 43.25 | -123.46 | 400 | |
| Melville | city | Oregon | United States | 46.06 | -123.84 | 354 | |
| Mercer (historical) | city | Oregon | United States | 44.07 | -124.07 | 396 | |
| Merganser (historical) | city | Oregon | United States | 42.18 | -121.80 | 4189 | |
| Merlin | city | Oregon | United States | 42.52 | -123.42 | 997 | |
| Merrill | city | Oregon | United States | 42.03 | -121.60 | 4189 | |
| Metolius | city | Oregon | United States | 44.59 | -121.18 | 2585 | |
| Metzger | city | Oregon | United States | 45.45 | -122.76 | 206 | |
| Middle Grove | city | Oregon | United States | 44.97 | -122.97 | 193 | |
| Middleton | city | Oregon | United States | 45.34 | -122.86 | 219 | |
| Midland | city | Oregon | United States | 42.13 | -121.82 | 4199 | |
| Midway | city | Oregon | United States | 45.09 | -123.66 | 400 | |
| Midway | city | Oregon | United States | 45.41 | -122.96 | 200 | |
| Mikkalo | city | Oregon | United States | 45.47 | -120.23 | 1669 | |
| Miles Crossing | city | Oregon | United States | 46.15 | -123.84 | 82 | |
| Mill Camp | city | Oregon | United States | 43.80 | -123.23 | 830 | |
| Mill City | city | Oregon | United States | 44.75 | -122.48 | 997 | |
| Millersburg | city | Oregon | United States | 44.68 | -123.06 | 255 | |
| Millican | city | Oregon | United States | 43.88 | -120.92 | 4330 | |
| Millington | city | Oregon | United States | 43.33 | -124.20 | 200 | |
| Millwood | city | Oregon | United States | 43.39 | -123.55 | 400 | |
| Milo | city | Oregon | United States | 42.93 | -123.05 | 997 | |
| Milo Post Office (historical) | city | Oregon | United States | 42.93 | -123.05 | 997 | |
| Milton-Freewater | city | Oregon | United States | 45.93 | -118.39 | 1154 | |
| Milvokis | city | Oregon | United States | 45.45 | -122.64 | 193 | |
| Milwaukie | city | Oregon | United States | 45.45 | -122.64 | 193 | |
| Milwaukie Heights | city | Oregon | United States | 45.43 | -122.63 | 193 | |
| Minam | city | Oregon | United States | 45.62 | -117.72 | 2621 | |
| Minerva | city | Oregon | United States | 44.07 | -123.96 | 416 | |
| Mishawaka | city | Oregon | United States | 45.86 | -123.57 | 830 | |
| Mission | city | Oregon | United States | 45.67 | -118.68 | 1669 | |
| Mist | city | Oregon | United States | 46.00 | -123.26 | 830 | |
| Mitchell | city | Oregon | United States | 44.57 | -120.15 | 3349 | |
| Modeville | city | Oregon | United States | 44.79 | -123.13 | 196 | |
| Modoc Point | city | Oregon | United States | 42.44 | -121.87 | 5029 | |
| Mohawk | city | Oregon | United States | 44.14 | -122.92 | 830 | |
| Mohawk Post (historical) | city | Oregon | United States | 44.14 | -122.92 | 830 | |
| Mohler | city | Oregon | United States | 45.71 | -123.86 | 200 | |
| Molalla | city | Oregon | United States | 45.15 | -122.58 | 393 | |
| Monitor | city | Oregon | United States | 45.10 | -122.75 | 200 | |
| Monkland | city | Oregon | United States | 45.49 | -120.63 | 1801 | |
| Monmouth | city | Oregon | United States | 44.85 | -123.23 | 200 | |
| Monroe | city | Oregon | United States | 44.31 | -123.30 | 298 | |
| Montague (historical) | city | Oregon | United States | 45.63 | -120.09 | 830 | |
| Montavilla | city | Oregon | United States | 45.52 | -122.58 | 328 | |
| Monument | city | Oregon | United States | 44.82 | -119.42 | 1998 | |
| Morgan | city | Oregon | United States | 45.55 | -119.92 | 1030 | |
| Moro | city | Oregon | United States | 45.48 | -120.73 | 1814 | |
| Morrison (historical) | city | Oregon | United States | 44.64 | -123.86 | 200 | |
| Mosier | city | Oregon | United States | 45.68 | -121.40 | 200 | |
| Mound (historical) | city | Oregon | United States | 43.89 | -123.45 | 830 | |
| Mount Angel | city | Oregon | United States | 45.07 | -122.80 | 193 | |
| Mount Hood | city | Oregon | United States | 45.54 | -121.57 | 1669 | |
| Mount Hood Village | city | Oregon | United States | 45.36 | -121.98 | 1669 | |
| Mount Pleasant | city | Oregon | United States | 45.34 | -122.61 | 400 | |
| Mount Vernon | city | Oregon | United States | 44.42 | -119.11 | 3349 | |
| Mountain Air Park | city | Oregon | United States | 45.36 | -121.99 | 1197 | |
| Mountain View | city | Oregon | United States | 42.11 | -122.38 | 3645 | |
| Mountain View (historical) | city | Oregon | United States | 42.49 | -122.79 | 1669 | |
| Mountaindale | city | Oregon | United States | 45.62 | -123.04 | 200 | |
| Mulino | city | Oregon | United States | 45.22 | -122.58 | 216 | |
| Mulloy | city | Oregon | United States | 45.33 | -122.79 | 200 | |
| Multnomah | city | Oregon | United States | 45.47 | -122.71 | 410 | |
| Murphy | city | Oregon | United States | 42.35 | -123.33 | 1197 | |
| Myrtle Creek | city | Oregon | United States | 43.02 | -123.29 | 830 | |
| Myrtle Point | city | Oregon | United States | 43.06 | -124.14 | 200 |