| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Mount Jackson | city | Indiana | United States | 39.77 | -86.21 | 830 | |
| Mount Jackson | city | Pennsylvania | United States | 40.96 | -80.44 | 997 | |
| Mount Jackson | city | Virginia | United States | 38.75 | -78.64 | 898 | |
| Mount Jackson | city | California | United States | 38.51 | -122.90 | 78 | |
| Mount Jagged | city | South Australia | Australia | -35.43 | 138.58 | 830 | 651 |
| Mount James | city | South Australia | Australia | -30.68 | 138.15 | 1669 | 0 |
| Mount James | city | Saint Andrew | Jamaica | 18.11 | -76.79 | 2509 | 160129 |
| Mount James Airport | airport | -24.62 | 116.93 | 0 | |||
| Mount Jean | city | Northern Territory | Australia | -13.54 | 134.21 | 396 | 0 |
| Mount Jeffcott | city | Victoria | Australia | -36.35 | 143.13 | 298 | 149 |
| Mount Jefferson | city | Alabama | United States | 32.71 | -85.37 | 869 | |
| Mount Jefferson | city | Ohio | United States | 40.24 | -84.33 | 967 | |
| Mount Jewett | city | Pennsylvania | United States | 41.73 | -78.64 | 2509 | |
| Mount Jordan Addition | city | Utah | United States | 40.58 | -111.88 | 4520 | |
| Mount Jordan Meadows | city | Utah | United States | 40.58 | -111.89 | 4425 | |
| Mount Jordan Mesa | city | Utah | United States | 40.58 | -111.85 | 5029 | |
| Mount Joy | city | Delaware | United States | 38.63 | -75.30 | 26 | |
| Mount Joy | city | Iowa | United States | 41.62 | -90.57 | 830 | |
| Mount Joy | city | New Jersey | United States | 40.59 | -75.19 | 830 | |
| Mount Joy | city | Ohio | United States | 38.95 | -83.17 | 1046 | |
| Mount Joy | city | Pennsylvania | United States | 40.11 | -76.50 | 311 | |
| Mount Joy | city | Pennsylvania | United States | 40.15 | -79.50 | 1194 | |
| Mount Joy | city | Pennsylvania | United States | 41.05 | -78.44 | 1669 | |
| Mount Joy | city | Tennessee | United States | 35.52 | -87.26 | 830 | |
| Mount Joy | city | Texas | United States | 33.48 | -95.62 | 830 | |
| Mount Joy Crossing | city | Texas | United States | 33.48 | -95.62 | 830 | |
| Mount Joy Mobile Home Park | city | Iowa | United States | 41.62 | -90.56 | 830 | |
| Mount Judea | city | Arkansas | United States | 35.92 | -93.06 | 974 | |
| Mount Jukes | city | Queensland | Australia | -21.02 | 148.95 | 830 | 0 |
| Mount Jukes East | city | Queensland | Australia | -21.02 | 148.97 | 830 | 0 |
| Mount Julian | city | Queensland | Australia | -20.38 | 148.62 | 104 | 894 |
| Mount Juliet | city | Tennessee | United States | 36.20 | -86.52 | 830 | |
| Mount Jumbo Trailer Court | city | Montana | United States | 46.87 | -113.94 | 3349 |