There are 1,525 titles that begin with the letter O

  1. Open Cultural Studies (EISSN: 2451-3474)
  2. Open Dentistry Journal (EISSN: 1874-2106)
  3. Open Economics (EISSN: 2451-3458)
  4. Open Economies Review (ISSN: 0923-7992,EISSN: 1573-708X)
  5. Open Education Studies (ISSN: 2544-7831)
  6. Open Engineering (EISSN: 2391-5439)
  7. Open file report (ISSN: 0149-984X)
  8. Open Forum Infectious Diseases (ISSN: 2328-8957)
  9. Open Gender Journal (EISSN: 2512-5192)
  10. Open Geomechanics (EISSN: 2644-9676)
  11. Open Geosciences (EISSN: 2391-5447)
  12. Open Geospatial Data, Software and Standards (EISSN: 2363-7501)
  13. Open Health Data (EISSN: 2054-7102)
  14. The Open Health Services and Policy Journal (ISSN: 1874-9240)
  15. Open Heart (ISSN: 2398-595X,EISSN: 2053-3624)
  16. Open Information Science (EISSN: 2451-1781)
  17. Open Innovations Association (FRUCT), Conference of (ISSN: 2305-7254)
  18. The Open inorganic chemistry journal (ISSN: 1874-0987)
  19. Open Journal for Legal Studies (EISSN: 2620-0619)
  20. Open Journal of Advanced Materials Research (ISSN: 2311-0104)
  21. Open Journal of Astrophysics (EISSN: 2565-6120)
  22. Open Journal of Bioresources (EISSN: 2056-5542)
  23. Open Journal of Cardiovascular Surgery (ISSN: 1179-0652)
  24. Open Journal of Humanities (EISSN: 2612-6966)
  25. Open journal of implant dentistry (ISSN: 2226-4507)
  26. Open Journal of Mathematical Analysis (ISSN: 2616-8103,EISSN: 2616-8111)
  27. Open Journal of Mathematical Sciences (ISSN: 2616-4906,EISSN: 2523-0212)
  28. Open Journal of Occupational Therapy (ISSN: 2168-6408)
  29. Open Journal of Psychiatry and Allied Sciences (ISSN: 2394-2053,EISSN: 2394-2061)
  30. Open learning (ISSN: 0268-0513,EISSN: 1469-9958)
  31. Open Life Sciences (EISSN: 2391-5412)
  32. Open Linguistics (ISSN: 2300-9969)
  33. The Open Macromolecules Journal (ISSN: 1874-3439)
  34. Open Management (EISSN: 2451-344X)
  35. The Open Materials Science Journal (ISSN: 1874-088X)
  36. Open Mathematics (EISSN: 2391-5455)
  37. The Open Medical Informatics Journal (EISSN: 1874-4311)
  38. Open Medicinal Chemistry Journal (EISSN: 1874-1045)
  39. Open Medicine (EISSN: 2391-5463)
  40. Open Medicine (ISSN: 1911-2092)
  41. The Open Microbiology Journal (EISSN: 1874-2858)
  42. Open Mind: Discoveries in Cognitive Science (EISSN: 2470-2986)
  43. The Open Mineralogy Journal (ISSN: 1874-4567)
  44. Open Nanoscience Journal (ISSN: 1874-1401)
  45. The Open neuroimaging journal (EISSN: 1874-4400)
  46. The Open Neurology Journal (EISSN: 1874-205X)
  47. The open nursing journal (EISSN: 1874-4346)
  48. Open Ophthalmology Journal (ISSN: 1874-3641)
  49. The Open Organic Chemistry Journal (ISSN: 1874-0952)
  50. The Open Orthopaedics Journal (EISSN: 1874-3250)
  51. Open Philosophy (EISSN: 2543-8875)
  52. The Open physical chemistry journal (ISSN: 1874-0677)
  53. Open Physics (EISSN: 2391-5471)
  54. Open Political Science (EISSN: 2543-8042)
  55. Open praxis (ISSN: 1369-9997,EISSN: 2304-070X)
  56. Open Psychology (EISSN: 2543-8883)
  57. Open Quaternary (EISSN: 2055-298X)
  58. Open Ranks
  59. Open Research Europe (EISSN: 2732-5121)
  60. Open Respiratory Archives (EISSN: 2659-6636)
  61. Open Respiratory Medicine Journal (EISSN: 1874-3064)
  62. Open review of educational research (ISSN: 2326-5507)
  63. Open Rheumatology Journal (EISSN: 1874-3129)
  64. Open rivers (ISSN: 2471-190X)
  65. Open Road
  66. Open Screens (ISSN: 2516-2888)
  67. Open Shelf (ISSN: 2368-1837)
  68. Open Sights
  69. Open Solutions Inc. MarketLine Company Profile
  70. The Open Source Business Resource (ISSN: 1913-6102)
  71. Open Source FOR You
  72. Open Source Jahrbuch
  73. The Open spectroscopy journal (ISSN: 1874-3838)
  74. Open Text Corporation MarketLine Company Profile
  75. Open Theology (ISSN: 2300-6579)
  76. The Open Thermodynamics Journal (ISSN: 1874-396X)
  77. The Open Toxicology Journal (ISSN: 1874-3404)
  78. Open Veterinary Journal (ISSN: 2226-4485,EISSN: 2218-6050)
  79. Open Veterinary Science (ISSN: 2544-8951)
  80. Open Virology Journal (EISSN: 1874-3579)
  81. Openings (ISSN: 2326-0157)
  82. OpenNano (EISSN: 2352-9520)
  83. OpenPhysio (EISSN: 2631-8369)
  84. OpenSource For You
  85. Opera Canada (ISSN: 0030-3577)
  86. The Opera journal (ISSN: 0030-3585)
  87. Opera News (ISSN: 0030-3607,EISSN: 1938-1506)
  88. The Opera Quarterly (ISSN: 0736-0053,EISSN: 1476-2870)
  89. Opera Slavica (ISSN: 1211-7676)
  90. Opera Software ASA MarketLine Company Profile
  91. The operating theatre journal (ISSN: 1747-728X)
  92. Operation County fair Newsletter
  93. Operational Research (ISSN: 1109-2858,EISSN: 1866-1505)
  94. Operational Research in Engineering Sciences: Theory and Applications (ORESTA) (ISSN: 2620-1607,EISSN: 2620-1747)
  95. Operational Research Quarterly (1950-1952) (ISSN: 1473-284X,EISSN: 2397-5350)
  96. Operational Research Quarterly (1970-1977) (ISSN: 0030-3623,EISSN: 2397-5334)
  97. Operational Risk & Regulation (ISSN: 2045-0672)
  98. Operations & Fulfillment (ISSN: 1069-6083)
  99. Operations & Fulfillment
  100. Operations Management (ISSN: 1529-5648)