| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Oballos | city | Coahuila de Zaragoza | Mexico | 27.44 | -101.37 | 1669 | 218 |
| Obayos | city | Coahuila de Zaragoza | Mexico | 27.44 | -101.37 | 1669 | 218 |
| Ocampo | city | Coahuila de Zaragoza | Mexico | 27.31 | -102.40 | 3638 | 0 |
| Ocho de Enero | city | Coahuila de Zaragoza | Mexico | 27.00 | -101.50 | 1761 | 37660 |
| Ocolotlan de Abajo | city | Coahuila de Zaragoza | Mexico | 25.47 | -101.00 | 5029 | 92293 |
| Ocolotlan de Arriba | city | Coahuila de Zaragoza | Mexico | 25.48 | -100.99 | 5029 | 92159 |
| Ocolotlan de Enmedio | city | Coahuila de Zaragoza | Mexico | 25.48 | -101.00 | 5029 | 92332 |
| Ojito de Agua de Ahuichila | city | Coahuila de Zaragoza | Mexico | 25.08 | -102.67 | 5029 | 123 |
| Ojo Caliente | city | Coahuila de Zaragoza | Mexico | 29.17 | -102.95 | 1919 | 0 |
| Ojo Caliente | city | Coahuila de Zaragoza | Mexico | 27.22 | -101.25 | 1669 | 183 |
| Ojo Caliente | city | Coahuila de Zaragoza | Mexico | 25.62 | -100.84 | 4189 | 15180 |
| Ojo Cautivo | city | Coahuila de Zaragoza | Mexico | 26.48 | -101.83 | 6709 | 0 |
| Ojo Escondido | city | Coahuila de Zaragoza | Mexico | 28.43 | -101.05 | 1669 | 185 |
| Ojo Negro | city | Coahuila de Zaragoza | Mexico | 25.43 | -100.64 | 7549 | 1043 |
| Ojo de Agua | city | Coahuila de Zaragoza | Mexico | 29.37 | -101.34 | 1669 | 447 |
| Ojo de Agua | city | Coahuila de Zaragoza | Mexico | 29.22 | -100.98 | 1167 | 1885 |
| Ojo de Agua | city | Coahuila de Zaragoza | Mexico | 27.00 | -102.10 | 3349 | 7155 |
| Ojo de Agua | city | Coahuila de Zaragoza | Mexico | 26.85 | -102.10 | 4189 | 0 |
| Ojo de Agua | city | Coahuila de Zaragoza | Mexico | 28.74 | -101.14 | 1669 | 163 |
| Ojo de Agua | city | Coahuila de Zaragoza | Mexico | 25.42 | -100.65 | 7549 | 1043 |
| Ojo de Agua | city | Coahuila de Zaragoza | Mexico | 25.29 | -100.55 | 8566 | 914 |
| Ojo de Agua | city | Coahuila de Zaragoza | Mexico | 25.42 | -100.54 | 8389 | 1043 |
| Ojo de Agua | city | Coahuila de Zaragoza | Mexico | 28.63 | -100.60 | 830 | 17292 |
| Ojo de Agua | city | Coahuila de Zaragoza | Mexico | 28.40 | -100.95 | 1669 | 1365 |
| Ojo de Agua de Guadalupe | city | Coahuila de Zaragoza | Mexico | 28.16 | -100.64 | 1190 | 114 |
| Ojo de Agua de San Diego | city | Coahuila de Zaragoza | Mexico | 28.05 | -100.60 | 1223 | 149 |
| Ojo de Agua de las Burras | city | Coahuila de Zaragoza | Mexico | 25.48 | -102.79 | 3602 | 105 |
| Ojo de Esteban | city | Coahuila de Zaragoza | Mexico | 28.35 | -100.88 | 1669 | 8773 |
| Ojo de Gracias a Dios | city | Coahuila de Zaragoza | Mexico | 28.00 | -101.00 | 1669 | 0 |
| Ojo de Mula | city | Coahuila de Zaragoza | Mexico | 25.43 | -100.65 | 7549 | 1043 |
| Ojo de la Ventura | city | Coahuila de Zaragoza | Mexico | 27.51 | -103.84 | 4189 | 0 |
| Ojo del Saucillo | city | Coahuila de Zaragoza | Mexico | 26.80 | -101.23 | 5259 | 4005 |
| Ojo las Animas | city | Coahuila de Zaragoza | Mexico | 28.46 | -100.98 | 1253 | 2111 |
| Ojuelos | city | Coahuila de Zaragoza | Mexico | 25.45 | -102.05 | 5242 | 901 |
| Olameda | city | Coahuila de Zaragoza | Mexico | 27.60 | -101.48 | 1761 | 17 |
| Olivares | city | Coahuila de Zaragoza | Mexico | 25.53 | -103.30 | 3697 | 18462 |
| Olivares | city | Coahuila de Zaragoza | Mexico | 28.44 | -100.93 | 1230 | 5611 |
| Olivo | city | Coahuila de Zaragoza | Mexico | 25.52 | -103.29 | 3704 | 17928 |
| Oratorio | city | Coahuila de Zaragoza | Mexico | 25.58 | -101.35 | 4189 | 434 |
| Oratorio Chico | city | Coahuila de Zaragoza | Mexico | 25.58 | -101.33 | 4189 | 382 |
| Oratorio Grande | city | Coahuila de Zaragoza | Mexico | 25.58 | -101.35 | 4189 | 434 |
| Oro Blanco | city | Coahuila de Zaragoza | Mexico | 28.22 | -100.49 | 918 | 149 |
| Oro Verde | city | Coahuila de Zaragoza | Mexico | 28.53 | -100.43 | 830 | 658 |
| Orozco | city | Coahuila de Zaragoza | Mexico | 26.87 | -102.09 | 2509 | 0 |
| Ortegon | city | Coahuila de Zaragoza | Mexico | 29.04 | -102.75 | 3435 | 185 |
| Oso Blanco | city | Coahuila de Zaragoza | Mexico | 28.87 | -101.65 | 2811 | 0 |
| Ostos | city | Coahuila de Zaragoza | Mexico | 25.29 | -101.30 | 5869 | 6585 |
| Otto | city | Coahuila de Zaragoza | Mexico | 25.08 | -103.28 | 4294 | 28346 |