| o.k. (1) |
| Oakland (5) |
| Oasis (3) |
| Obama (1) |
| Oberst (1) |
| Ofitserskie (1) |
| Ogan Jaya (1) |
| Ogonek (1) |
| Oiva (1) |
| Ok (2) |
| ok! (2) |
| Okapi (2) |
| Okhota (1) |
| Okhotnichi (3) |
| Okhotniki Na Privale (1) |
| Oki (2) |
| Oktyabr (1) |
| Old Castle (1) |
| Old Gold (16) |
| Old Mac (2) |
| Old Navy (14) |
| Old Splendor (9) |
| Old World (1) |
| Oldo (1) |
| Olympia (5) |
| Olympic (4) |
| Omaha (1) |
| Omar (1) |
| Omar Sharif (3) |
| Omé (9) |
| Omega (10) |
| Omni (3) |
| O'Neill (2) |
| O'Nyle (34) |
| One Million (1) |
| Oozora (1) |
| Opal (9) |
| Opatija (13) |
| Opéra (1) |
| Optima (21) |
| Optiva (1) |
| Orang Setia (1) |
| Orbit (1) |
| Orbita (10) |
| Ordibehesht (1) |
| Orel V (1) |
| Orfeu (1) |
| Orient (9) |
| Orient Express (1) |
| Orienta (8) |
| Oriental (1) |
| Orientales (1) |
| Orientali (1) |
| Oriente (1) |
| Origin (1) |
| Original Virginia (2) |
| Originals (1) |
| Orion (3) |
| Oris (24) |
| Ormond (2) |
| Oro Negro (1) |
| Oros (1) |
| Orpheus (2) |
| Oscar (31) |
| Oshno (7) |
| Otaman (5) |
| Otchizna (4) |
| Otto (1) |
| Outh Chhap (4) |
| Ova (6) |
| Ovation (1) |
| Overstolz (25) |
| OW (1) |
| Oxford (2) |
| Oxi Bithué (1) |
| Oxon (2) |
| Oyot Cikal (1) |