Journals having name started with letter O are:
Total Journals : 31(The journals having sign * are open access journals, other than to subscribed journals).
| 1. | Obesity Reviews |
| Publisher: | Wiley-Blackwell |
| 2. | OBESITY REVIEWS |
| Publisher: | Wiley-Blackwell |
| 3. | Occupational Medicine |
| Publisher: | Oxford University Press |
| 4. | Oceanic Engineering, IEEE Journal of |
| Publisher: | IEEE |
| 5. | OCLC Systems and Services |
| Publisher: | Emerald |
| 6. | Oikos |
| Publisher: | Wiley-Blackwell |
| 7. | Oil and Energy Trends |
| Publisher: | Wiley-Blackwell |
| 8. | On the Horizon |
| Publisher: | Emerald |
| 9. | Online Information Review |
| Publisher: | Emerald |
| 10. | Ophthalmic and Physiological Optics |
| Publisher: | Wiley-Blackwell |
| 11. | Optical Communications and Networking, IEEE/OSA Journal of |
| Publisher: | IEEE |
| 12. | Optical Materials Express |
| Publisher: | Optical Society of America |
| 13. | Optics and Photonics News |
| Publisher: | Optical Society of America |
| 14. | Optics Express |
| Publisher: | Optical Society of America |
| 15. | Optics Letters |
| Publisher: | Optical Society of America |
| 16. | Optimal Control Applications and Methods |
| Publisher: | Wiley-Blackwell |
| 17. | Optimization |
| Publisher: | Taylor and Francis |
| 18. | Optimization Methods and Software |
| Publisher: | Taylor and Francis |
| 19. | Optoelectronics, IEE Proceedings - |
| Publisher: | IEEE |
| 20. | Optoelectronics, IEE Proceedings J |
| Publisher: | IEEE |
| 21. | Optoelectronics, IET |
| Publisher: | IEEE |
| 22. | Oral Diseases |
| Publisher: | Wiley-Blackwell |
| 23. | Organic and Biomolecular Chemistry |
| Publisher: | Royal Society of Chemistry |
| 24. | Organic Preparations and Procedures International |
| Publisher: | Taylor and Francis |
| 25. | Organised Sound |
| Publisher: | Cambridge University Press |
| 26. | Oriental Insects |
| Publisher: | Taylor and Francis |
| 27. | Orthodontics & Craniofacial Research |
| Publisher: | Wiley-Blackwell |
| 28. | Oryx |
| Publisher: | Cambridge University Press |
| 29. | Ostrich |
| Publisher: | Taylor and Francis |
| 30. | Otolaryngology-Head and Neck Surgery |
| Publisher: | Sage Publishing |
| 31. | Ozone: Science and Engineering |
| Publisher: | Taylor and Francis |