| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Donji Obilic | city | Srbica | Kosovo | 42.70 | 20.71 | 2043 | 6399 |
| Donji Obod | city | Dubrovacko-Neretvanska Zupanija | Croatia | 42.59 | 18.23 | 295 | 3934 |
| Donji Obodnik | city | Republika Srpska | Bosnia & Herzegovina | 44.57 | 17.46 | 1669 | 3874 |
| Donji Obrijež | city | Republika Srpska | Bosnia & Herzegovina | 44.69 | 19.05 | 830 | 3874 |
| Donji Obrtici | city | Republika Srpska | Bosnia & Herzegovina | 43.84 | 18.86 | 3349 | 4023 |
| Donji Ocaus | city | Republika Srpska | Bosnia & Herzegovina | 44.51 | 17.69 | 2509 | 3874 |
| Donji Odžak | city | Republika Srpska | Bosnia & Herzegovina | 43.91 | 18.84 | 3349 | 4013 |
| Donji Odžak | city | Federacija Bosne i Hercegovine | Bosnia & Herzegovina | 43.99 | 17.29 | 4189 | 4619 |
| Donji Ogradenik | city | Federacija Bosne i Hercegovine | Bosnia & Herzegovina | 43.25 | 17.65 | 830 | 4768 |
| Donji Ograđenik | city | Federacija Bosne i Hercegovine | Bosnia & Herzegovina | 43.25 | 17.65 | 830 | 4768 |
| Donji Okrug | city | Splitsko-Dalmatinska Zupanija | Croatia | 43.50 | 16.21 | 0 | 7005 |
| Donji Okucani | city | Brodsko-Posavska Zupanija | Croatia | 45.25 | 17.19 | 347 | 7504 |
| Donji Olovci | city | Federacija Bosne i Hercegovine | Bosnia & Herzegovina | 44.28 | 18.67 | 2509 | 4619 |
| Donji Orahovac | city | Republika Srpska | Bosnia & Herzegovina | 42.67 | 18.50 | 3349 | 4023 |
| Donji Orahovac | city | Montenegro | 42.49 | 18.76 | 0 | 6873 | |
| Donji Orahovac | city | Montenegro | 42.49 | 18.75 | 0 | 6873 | |
| Donji Orasac | city | Federacija Bosne i Hercegovine | Bosnia & Herzegovina | 44.42 | 17.42 | 1896 | 4199 |
| Donji Orasi | city | Montenegro | 42.45 | 19.03 | 2509 | 2384 | |
| Donji Orbanici | city | Istarska Zupanija | Croatia | 45.15 | 13.89 | 1210 | 12221 |
| Donji Orizari | city | Veles | Macedonia | 41.67 | 21.75 | 898 | 12387 |
| Donji Orlovci | city | Republika Srpska | Bosnia & Herzegovina | 44.97 | 16.75 | 830 | 32696 |
| Donji Osječani | city | Republika Srpska | Bosnia & Herzegovina | 44.83 | 18.12 | 830 | 3874 |
| Donji Ostrc | city | Zagrebacka Zupanija | Croatia | 45.70 | 15.43 | 1059 | 3392 |