| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Mab | city | Louisiana | United States | 30.85 | -92.76 | 131 | |
| Mack | city | Louisiana | United States | 29.96 | -92.07 | 13 | |
| Macland | city | Louisiana | United States | 30.66 | -92.05 | 29 | |
| Maddens Spur (historical) | city | Louisiana | United States | 32.20 | -93.29 | 203 | |
| Madeline Court | city | Louisiana | United States | 30.46 | -91.08 | 42 | |
| Madewood | city | Louisiana | United States | 29.93 | -90.99 | 9 | |
| Madisonville | city | Louisiana | United States | 30.40 | -90.16 | 3 | |
| Magda (historical) | city | Louisiana | United States | 31.14 | -92.28 | 62 | |
| Magellan Place | city | Louisiana | United States | 30.42 | -91.06 | 39 | |
| Magenta | city | Louisiana | United States | 32.50 | -92.05 | 72 | |
| Magenta | city | Louisiana | United States | 32.37 | -93.58 | 147 | |
| Magnolia | city | Louisiana | United States | 30.56 | -90.71 | 52 | |
| Magnolia | city | Louisiana | United States | 29.55 | -89.78 | 3 | |
| Magnolia | city | Louisiana | United States | 30.54 | -90.99 | 39 | |
| Magnolia | city | Louisiana | United States | 29.72 | -90.81 | 3 | |
| Magnolia | city | Louisiana | United States | 31.51 | -92.20 | 52 | |
| Magnolia | city | Louisiana | United States | 30.00 | -91.06 | 13 | |
| Magnolia | city | Louisiana | United States | 32.04 | -93.43 | 127 | |
| Magnolia | city | Louisiana | United States | 31.55 | -92.94 | 101 | |
| Magnolia Bend | city | Louisiana | United States | 30.52 | -90.99 | 36 | |
| Magnolia Forest | city | Louisiana | United States | 30.33 | -89.73 | 19 | |
| Magnolia Heights | city | Louisiana | United States | 30.38 | -91.13 | 42 | |
| Magnolia Heights | city | Louisiana | United States | 30.25 | -89.78 | 9 | |
| Magnolia Landing | city | Louisiana | United States | 30.30 | -90.63 | 3 | |
| Magnolia Park | city | Louisiana | United States | 31.43 | -92.52 | 121 | |
| Magnolia Plantation | city | Louisiana | United States | 29.71 | -90.82 | 6 | |
| Magnolia Ridge | city | Louisiana | United States | 30.41 | -91.16 | 22 | |
| Magnolia Terrace | city | Louisiana | United States | 30.43 | -91.18 | 22 | |
| Magnolia Woods | city | Louisiana | United States | 30.38 | -91.12 | 42 | |
| Mahan | city | Louisiana | United States | 32.89 | -93.05 | 347 | |
| Maidco | city | Louisiana | United States | 32.40 | -92.11 | 68 | |
| Mail Boxes | city | Louisiana | United States | 32.82 | -93.91 | 275 | |
| Maitland | city | Louisiana | United States | 31.76 | -91.61 | 49 | |
| Maitland Landing | city | Louisiana | United States | 31.76 | -91.61 | 49 | |
| Majorias Many Trees Mobile Home Park | city | Louisiana | United States | 29.83 | -90.11 | 3 | |
| Majors | city | Louisiana | United States | 30.60 | -91.44 | 26 | |
| Malarcher (historical) | city | Louisiana | United States | 30.05 | -90.83 | 13 | |
| Mallard Junction | city | Louisiana | United States | 30.24 | -93.16 | 9 | |
| Mamou | city | Louisiana | United States | 30.63 | -92.42 | 59 | |
| Manchac | city | Louisiana | United States | 30.29 | -90.40 | 3 | |
| Manchester | city | Louisiana | United States | 30.19 | -93.10 | 19 | |
| Mandalay | city | Louisiana | United States | 29.57 | -90.77 | 3 | |
| Mandeville | city | Louisiana | United States | 30.36 | -90.07 | 3 | |
| Mangham | city | Louisiana | United States | 32.31 | -91.77 | 55 | |
| Manifest | city | Louisiana | United States | 31.71 | -91.96 | 49 | |
| Manistee (historical) | city | Louisiana | United States | 31.58 | -92.36 | 137 | |
| Mannheim (historical) | city | Louisiana | United States | 30.71 | -91.31 | 22 | |
| Manning (historical) | city | Louisiana | United States | 32.26 | -93.35 | 265 | |
| Mansfield | city | Louisiana | United States | 32.04 | -93.70 | 328 | |
| Mansford | city | Louisiana | United States | 32.47 | -91.14 | 82 | |
| Mansura | city | Louisiana | United States | 31.06 | -92.05 | 78 | |
| Many | city | Louisiana | United States | 31.57 | -93.48 | 242 | |
| Maplewood | city | Louisiana | United States | 30.23 | -93.32 | 13 | |
| Marathon | city | Louisiana | United States | 30.06 | -90.60 | 19 | |
| Marburyville (historical) | city | Louisiana | United States | 30.64 | -90.46 | 98 | |
| Marcarco | city | Louisiana | United States | 32.72 | -91.99 | 72 | |
| Marce | city | Louisiana | United States | 29.94 | -91.88 | 3 | |
| Marceaux | city | Louisiana | United States | 29.96 | -92.41 | 3 | |
| Marchand | city | Louisiana | United States | 30.15 | -90.99 | 13 | |
| Marco | city | Louisiana | United States | 31.51 | -92.76 | 147 | |
| Marguerite | city | Louisiana | United States | 29.88 | -91.68 | 6 | |
| Maria | city | Louisiana | United States | 29.73 | -91.42 | 3 | |
| Maribel Village | city | Louisiana | United States | 30.49 | -91.11 | 49 | |
| Maringouin | city | Louisiana | United States | 30.49 | -91.52 | 9 | |
| Marion | city | Louisiana | United States | 32.90 | -92.24 | 157 | |
| Marionville (historical) | city | Louisiana | United States | 30.82 | -92.84 | 98 | |
| Mark (historical) | city | Louisiana | United States | 30.35 | -91.25 | 9 | |
| Markee | city | Louisiana | United States | 30.93 | -93.12 | 187 | |
| Marksville | city | Louisiana | United States | 31.13 | -92.07 | 49 | |
| Marrero | city | Louisiana | United States | 29.90 | -90.10 | 3 | |
| Mars Hill | city | Louisiana | United States | 31.72 | -92.80 | 196 | |
| Marsalis | city | Louisiana | United States | 32.66 | -92.96 | 360 | |
| Marston (historical) | city | Louisiana | United States | 30.83 | -89.85 | 127 | |
| Martello Castle | city | Louisiana | United States | 29.95 | -89.84 | 0 | |
| Marthaville | city | Louisiana | United States | 31.74 | -93.40 | 249 | |
| Martin | city | Louisiana | United States | 32.09 | -93.22 | 249 | |
| Martin | city | Louisiana | United States | 29.56 | -89.77 | 3 | |
| Martin Junction | city | Louisiana | United States | 32.42 | -93.28 | 275 | |
| Martins Landing | city | Louisiana | United States | 31.83 | -91.57 | 52 | |
| Martinville | city | Louisiana | United States | 30.60 | -90.18 | 114 | |
| Marwede | city | Louisiana | United States | 30.44 | -91.16 | 49 | |
| Maryland | city | Louisiana | United States | 29.71 | -91.46 | 3 | |
| Maryland | city | Louisiana | United States | 31.92 | -91.37 | 62 | |
| Maryland | city | Louisiana | United States | 30.55 | -91.18 | 68 | |
| Maryland Heights | city | Louisiana | United States | 30.55 | -91.17 | 68 | |
| Mason | city | Louisiana | United States | 32.07 | -91.89 | 62 | |
| Mason (historical) | city | Louisiana | United States | 30.54 | -90.50 | 49 | |
| Masters | city | Louisiana | United States | 29.88 | -91.69 | 3 | |
| Mathews | city | Louisiana | United States | 29.69 | -90.55 | 6 | |
| Matilda | city | Louisiana | United States | 29.88 | -91.60 | 3 | |
| Maude | city | Louisiana | United States | 30.37 | -89.81 | 29 | |
| Maurepas | city | Louisiana | United States | 30.30 | -90.66 | 3 | |
| Maurice | city | Louisiana | United States | 30.11 | -92.12 | 22 | |
| Maxie | city | Louisiana | United States | 30.33 | -92.41 | 26 | |
| Maxies Mobile Valley | city | Louisiana | United States | 30.15 | -91.95 | 29 | |
| Mayers | city | Louisiana | United States | 32.41 | -93.62 | 154 | |
| Mayfair Heights | city | Louisiana | United States | 30.38 | -91.11 | 36 | |
| Mayfair Park | city | Louisiana | United States | 30.38 | -91.11 | 36 | |
| Mayfair Park North | city | Louisiana | United States | 30.39 | -91.11 | 36 | |
| Mayflower | city | Louisiana | United States | 31.95 | -91.39 | 59 | |
| Mayhew Landing | city | Louisiana | United States | 31.76 | -91.59 | 49 | |
| Mayna | city | Louisiana | United States | 31.43 | -91.86 | 22 | |
| Mayo | city | Louisiana | United States | 31.20 | -93.03 | 282 |