| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Mace | city | Indiana | United States | 40.01 | -86.80 | 830 | |
| Macedonia | city | Indiana | United States | 38.05 | -85.96 | 830 | |
| Mackey | city | Indiana | United States | 38.25 | -87.39 | 830 | |
| Mackie | city | Indiana | United States | 40.06 | -87.29 | 830 | |
| Macy | city | Indiana | United States | 40.96 | -86.13 | 866 | |
| Madalline | city | Indiana | United States | 39.73 | -87.08 | 830 | |
| Madison | city | Indiana | United States | 38.74 | -85.38 | 830 | |
| Magee | city | Indiana | United States | 41.53 | -86.75 | 830 | |
| Magley | city | Indiana | United States | 40.83 | -85.05 | 830 | |
| Magnet | city | Indiana | United States | 38.10 | -86.46 | 830 | |
| Magnetic Springs | city | Indiana | United States | 39.71 | -86.47 | 830 | |
| Magnolia | city | Indiana | United States | 38.25 | -86.39 | 830 | |
| Mahalasville | city | Indiana | United States | 39.36 | -86.36 | 830 | |
| Mahan Crossing | city | Indiana | United States | 38.56 | -86.36 | 830 | |
| Mahon | city | Indiana | United States | 40.94 | -85.38 | 830 | |
| Majenica | city | Indiana | United States | 40.77 | -85.45 | 830 | |
| Makin | city | Indiana | United States | 40.97 | -85.59 | 846 | |
| Malden | city | Indiana | United States | 41.38 | -87.03 | 830 | |
| Mallot Park (historical) | city | Indiana | United States | 39.85 | -86.12 | 830 | |
| Maltersville | city | Indiana | United States | 38.35 | -86.89 | 830 | |
| Manchester | city | Indiana | United States | 40.10 | -86.90 | 830 | |
| Manchester | city | Indiana | United States | 39.15 | -85.01 | 892 | |
| Manhattan | city | Indiana | United States | 39.56 | -86.93 | 830 | |
| Manilla | city | Indiana | United States | 39.57 | -85.62 | 895 | |
| Manor Woods | city | Indiana | United States | 41.03 | -85.26 | 830 | |
| Mansard Du Lac | city | Indiana | United States | 41.59 | -87.25 | 830 | |
| Mansfield | city | Indiana | United States | 39.68 | -87.10 | 830 | |
| Manson | city | Indiana | United States | 40.24 | -86.59 | 859 | |
| Manville | city | Indiana | United States | 38.79 | -85.29 | 830 | |
| Maple Del | city | Indiana | United States | 39.96 | -86.03 | 830 | |
| Maple Grove Village Mobile Home Park | city | Indiana | United States | 39.46 | -86.32 | 830 | |
| Maple Lane | city | Indiana | United States | 41.70 | -86.22 | 830 | |
| Maple Ridge | city | Indiana | United States | 39.68 | -86.29 | 830 | |
| Maple Valley | city | Indiana | United States | 39.87 | -85.59 | 997 | |
| Maples | city | Indiana | United States | 41.01 | -84.97 | 830 | |
| Mapleton | city | Indiana | United States | 39.83 | -86.17 | 830 | |
| Mapleton Corner | city | Indiana | United States | 39.19 | -85.55 | 830 | |
| Maplewood | city | Indiana | United States | 39.83 | -86.51 | 967 | |
| Maplewood Mobile Home Park | city | Indiana | United States | 39.88 | -85.94 | 830 | |
| Maplewood Park | city | Indiana | United States | 41.12 | -85.06 | 830 | |
| Marble Hill | city | Indiana | United States | 38.59 | -85.45 | 830 | |
| Marco | city | Indiana | United States | 38.94 | -87.14 | 830 | |
| Mardenis | city | Indiana | United States | 40.90 | -85.41 | 830 | |
| Marengo | city | Indiana | United States | 38.37 | -86.34 | 830 | |
| Mariah Hill | city | Indiana | United States | 38.17 | -86.92 | 830 | |
| Marian Manor | city | Indiana | United States | 41.47 | -87.09 | 830 | |
| Marietta | city | Indiana | United States | 39.44 | -85.88 | 830 | |
| Marine Drive Mobile Home Park | city | Indiana | United States | 41.60 | -87.19 | 830 | |
| Marineland Gardens | city | Indiana | United States | 41.38 | -85.68 | 889 | |
| Marion | city | Indiana | United States | 39.59 | -85.75 | 830 | |
| Marion | city | Indiana | United States | 40.56 | -85.66 | 830 | |
| Marion Heights | city | Indiana | United States | 39.49 | -87.45 | 830 | |
| Marion Mills | city | Indiana | United States | 39.31 | -87.00 | 830 | |
| Markland | city | Indiana | United States | 38.78 | -84.99 | 830 | |
| Markle | city | Indiana | United States | 40.82 | -85.34 | 830 | |
| Markles | city | Indiana | United States | 39.53 | -87.35 | 830 | |
| Markleville | city | Indiana | United States | 39.98 | -85.61 | 931 | |
| Marlin Hills | city | Indiana | United States | 39.21 | -86.52 | 830 | |
| Marrs Center | city | Indiana | United States | 37.95 | -87.76 | 390 | |
| Marshall | city | Indiana | United States | 39.85 | -87.19 | 830 | |
| Marshfield | city | Indiana | United States | 38.71 | -85.78 | 830 | |
| Marshfield | city | Indiana | United States | 40.25 | -87.45 | 830 | |
| Marshtown | city | Indiana | United States | 40.95 | -86.34 | 830 | |
| Martin | city | Indiana | United States | 38.12 | -87.67 | 830 | |
| Martin Heights | city | Indiana | United States | 38.61 | -86.11 | 830 | |
| Martinsburg | city | Indiana | United States | 38.44 | -86.03 | 898 | |
| Martinsville | city | Indiana | United States | 39.43 | -86.43 | 830 | |
| Marysville | city | Indiana | United States | 38.59 | -85.64 | 830 | |
| Marysville | city | Indiana | United States | 38.35 | -87.28 | 830 | |
| Massacre | city | Indiana | United States | 39.16 | -87.41 | 830 | |
| Masthead | city | Indiana | United States | 39.93 | -85.97 | 830 | |
| Matamoras | city | Indiana | United States | 40.55 | -85.26 | 846 | |
| Matthews | city | Indiana | United States | 40.39 | -85.50 | 846 | |
| Mattix Corner | city | Indiana | United States | 40.34 | -86.57 | 830 | |
| Mauckport | city | Indiana | United States | 38.02 | -86.20 | 396 | |
| Maumee | city | Indiana | United States | 39.02 | -86.26 | 830 | |
| Mauzy | city | Indiana | United States | 39.62 | -85.34 | 1013 | |
| Max | city | Indiana | United States | 40.01 | -86.58 | 948 | |
| Maxinkuckee | city | Indiana | United States | 41.21 | -86.38 | 830 | |
| Maxville | city | Indiana | United States | 40.17 | -85.11 | 1046 | |
| Maxville | city | Indiana | United States | 38.00 | -86.81 | 360 | |
| Maxwell | city | Indiana | United States | 39.39 | -86.46 | 830 | |
| Maxwell | city | Indiana | United States | 39.86 | -85.77 | 898 | |
| Mayfield | city | Indiana | United States | 40.20 | -85.35 | 977 | |
| Mayflower Meadows | city | Indiana | United States | 39.88 | -86.08 | 830 | |
| Maynard | city | Indiana | United States | 41.54 | -87.51 | 830 | |
| Mays | city | Indiana | United States | 39.74 | -85.43 | 1000 | |
| Maysville | city | Indiana | United States | 38.65 | -87.23 | 830 | |
| Maysville Crossing | city | Indiana | United States | 40.33 | -87.15 | 830 | |
| Maywood | city | Indiana | United States | 39.73 | -86.22 | 830 |