| Subject | # |
|---|---|
| Opera singer | 2 |
| Operation | 1 |
| Operator | 5 |
| Operatör | 10 |
| Operatör Asım Onur | 1 |
| Operayı Osmanî Kumpanyası | 1 |
| Operet | 17 |
| Operetta | 15 |
| Ophthalmologist | 3 |
| Ophthalmologists | 1 |
| Opium | 1 |
| Oprhan | 1 |
| Optician | 1 |
| Optician Mişon | 2 |
| Opticians | 1 |
| Orak | 1 |
| Orak (İdris) | 1 |
| Oral (Cemal) | 1 |
| Oral (Tülin) | 1 |
| Oral Keçecioğlu | 1 |
