UpAlphabetical listing of Places in New Mexico
| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
| O'Neil Landing | city | New Mexico | United States | 35.87 | -106.80 | 8389 | |
| Oak Grove | city | New Mexico | United States | 32.63 | -108.34 | 5997 | |
| Oasis | city | New Mexico | United States | 32.92 | -107.32 | 4202 | |
| Obar | city | New Mexico | United States | 35.54 | -103.20 | 4189 | |
| Ocate | city | New Mexico | United States | 36.18 | -105.05 | 7549 | |
| Ochoa | city | New Mexico | United States | 32.19 | -103.44 | 3412 | |
| Ogle (historical) | city | New Mexico | United States | 34.99 | -103.97 | 4396 | |
| Ohkay Owingeh | city | New Mexico | United States | 36.05 | -106.07 | 5869 | |
| Oil Center | city | New Mexico | United States | 32.50 | -103.26 | 3579 | |
| Ojita | city | New Mexico | United States | 35.50 | -105.25 | 6709 | |
| Ojito | city | New Mexico | United States | 36.43 | -107.09 | 7549 | |
| Ojito | city | New Mexico | United States | 36.14 | -105.71 | 8389 | |
| Ojitos Frios | city | New Mexico | United States | 35.52 | -105.32 | 6709 | |
| Ojo Amarillo | city | New Mexico | United States | 36.69 | -108.37 | 5869 | |
| Ojo Caliente | city | New Mexico | United States | 36.30 | -106.05 | 6709 | |
| Ojo Caliente | city | New Mexico | United States | 34.92 | -108.97 | 6709 | |
| Ojo Encino | city | New Mexico | United States | 35.96 | -107.35 | 6751 | |
| Ojo Feliz | city | New Mexico | United States | 36.06 | -105.12 | 7588 | |
| Ojo Sarco | city | New Mexico | United States | 36.12 | -105.78 | 7549 | |
| Old Campbell Place | city | New Mexico | United States | 33.84 | -108.89 | 6998 | |
| Old Carthage | city | New Mexico | United States | 33.88 | -106.73 | 5209 | |
| Old Chilili | city | New Mexico | United States | 34.91 | -106.20 | 6709 | |
| Old Hachita | city | New Mexico | United States | 31.91 | -108.43 | 5029 | |
| Old Horner Place | city | New Mexico | United States | 32.80 | -104.51 | 3599 | |
| Old Horse Springs | city | New Mexico | United States | 33.92 | -108.23 | 6998 | |
| Old Isaacs Place | city | New Mexico | United States | 31.69 | -108.90 | 5213 | |
| Old Longbotbam Place | city | New Mexico | United States | 32.93 | -105.17 | 5400 | |
| Old Moses | city | New Mexico | United States | 36.68 | -103.08 | 5029 | |
| Old Town | city | New Mexico | United States | 35.10 | -106.67 | 5029 | |
| Old Town | city | New Mexico | United States | 32.55 | -107.91 | 5029 | |
| Old Waterman Place | city | New Mexico | United States | 33.43 | -108.74 | 7549 | |
| Old Wright Place | city | New Mexico | United States | 32.48 | -105.90 | 4370 | |
| Olive | city | New Mexico | United States | 33.95 | -104.04 | 4189 | |
| Omega | city | New Mexico | United States | 34.32 | -108.37 | 7549 | |
| Omlee | city | New Mexico | United States | 32.84 | -105.97 | 4189 | |
| Onava | city | New Mexico | United States | 35.70 | -105.09 | 6709 | |
| Optimo | city | New Mexico | United States | 35.89 | -104.80 | 6709 | |
| Orange | city | New Mexico | United States | 31.86 | -106.64 | 4189 | |
| Orchard Place | city | New Mexico | United States | 34.69 | -107.48 | 6030 | |
| Organ | city | New Mexico | United States | 32.43 | -106.60 | 5196 | |
| Orogrande | city | New Mexico | United States | 32.37 | -106.08 | 4199 | |
| Ortiz (historical) | city | New Mexico | United States | 35.34 | -106.15 | 7549 | |
| Oscura | city | New Mexico | United States | 33.48 | -106.05 | 5029 | |
| Otis | city | New Mexico | United States | 32.35 | -104.17 | 3349 | |
| Otowi | city | New Mexico | United States | 35.88 | -106.14 | 5869 | |
| Otto | city | New Mexico | United States | 35.07 | -106.01 | 6197 | |
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