| Name | What | Region | Country | Lat | Long | Elev Ft. | Pop Est |
|---|
| Obrcevac | city | | Bosnia & Herzegovina | 44.27 | 18.6513889 | 2116 | 7161 |
| Obrčevac | city | | Bosnia & Herzegovina | 44.27 | 18.6513889 | 2116 | 7161 |
| Odboj | city | | Bosnia & Herzegovina | 44.8438889 | 18.6055556 | 331 | 7091 |
| Odzak | city | | Bosnia & Herzegovina | 44.4055556 | 18.6430556 | 915 | 7147 |
| Odzal | city | | Bosnia & Herzegovina | 44.3955556 | 18.4636111 | 2017 | 7147 |
| Odžak | city | | Bosnia & Herzegovina | 44.4055556 | 18.6430556 | 915 | 7147 |
| Ogradenovac | city | | Bosnia & Herzegovina | 44.7925 | 18.6972222 | 403 | 7095 |
| Ograđenovac | city | | Bosnia & Herzegovina | 44.7925 | 18.6972222 | 403 | 7095 |
| Okanova Bukva | city | | Bosnia & Herzegovina | 44.8561111 | 16.4891667 | 1676 | 7091 |
| Okiljevici | city | | Bosnia & Herzegovina | 43.1627778 | 18.6108333 | 4078 | 7106 |
| Okiljevići | city | | Bosnia & Herzegovina | 43.1627778 | 18.6108333 | 4078 | 7106 |
| Omacevici | city | | Bosnia & Herzegovina | 44.3491667 | 18.7161111 | 1932 | 7151 |
| Omačevići | city | | Bosnia & Herzegovina | 44.3491667 | 18.7161111 | 1932 | 7151 |
| Omerbegovaca | city | | Bosnia & Herzegovina | 44.8402778 | 18.79 | 347 | 7351 |
| Omerbegovača | city | | Bosnia & Herzegovina | 44.8402778 | 18.79 | 347 | 7351 |
| Osjecani | city | | Bosnia & Herzegovina | 44.375 | 18.3941667 | 1561 | 7151 |
| Osječani | city | | Bosnia & Herzegovina | 44.375 | 18.3941667 | 1561 | 7151 |
| Osredak | city | | Bosnia & Herzegovina | 44.9141667 | 15.9033333 | 1220 | 7082 |
| Ostra Luka | city | | Bosnia & Herzegovina | 45 | 18.5883333 | 282 | 7074 |
| Ostruznja Donja | city | | Bosnia & Herzegovina | 44.7319444 | 17.8652778 | 741 | 7105 |
| Ostružnja Donja | city | | Bosnia & Herzegovina | 44.7319444 | 17.8652778 | 741 | 7105 |
| Ovcarevici | city | | Bosnia & Herzegovina | 44.7836111 | 18.2741667 | 1430 | 7099 |
| Ovčarevići | city | | Bosnia & Herzegovina | 44.7836111 | 18.2741667 | 1430 | 7099 |
| Oštra Luka | city | | Bosnia & Herzegovina | 45 | 18.5883333 | 282 | 7074 |
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