| Sr. No. | Title | Registration Number | Languages | Periodicity | State | District | Owner | Publisher |
|---|---|---|---|---|---|---|---|---|
| 52701 | OORVASI | 11919 | Tamil | Fortnightly | Tamil Nadu | Chennai | BHARATHY THANGARASAN | BHARATHY THANGARASAN |
| 52702 | OOS WARTA | 31883 | Marathi | Quarterly | Maharashtra | Pune | SUGARCANE RESEARCH STATION | S.G.RANADIVE |
| 52703 | OOSMALA | 1937 | Marathi | Monthly | Maharashtra | Pune | V S KANE | V S KANE |
| 52704 | OOTACAMUND MUNCIPAL HIGH SCHOOL ANNUAL | 8208 | English,Tamil,Hindi | Annual | Tamil Nadu | The Nilgiris | MUNICIAPAL HIGH SCHOOL | S. ALBERT GNANADURAI |
| 52705 | OOTHAPOO | 42784 | Tamil | Monthly | Tamil Nadu | Chennai | S VENUGOPALAN | S VENUGOPALAN |
| 52706 | OOTRU | 29684 | Tamil | Monthly | Karnataka | Bengaluru | BANGALORE TAMIL SANGAM | G.DHAMODARAN |
| 52707 | OOTTRU THANNEER | 63698 | Tamil | Monthly | Tamil Nadu | Chennai | ETERNAL ROCK MINISTRIES TRUST | S. ANAND JOSEPH |
| 52708 | OOZHAL AMBALAM | 55392 | Tamil | Weekly | Tamil Nadu | Chennai | J.SUBRAMANIAM | J SUBRAMANIAM |
| 52709 | OOZHAL OLIPPU SEITHI | 122128 | Tamil | Monthly | Tamil Nadu | Chennai | FEDERATION OF ANTI - CORRUPTION TEAMS INDIA | N. SETHURAMAN |
| 52710 | OOZHIYAN | 11830 | Tamil | Fortnightly | Tamil Nadu | Coimbatore | G. A. VENKATACHALAM | G. A. VENKATACHALAM |