There are 1,585 titles that begin with the letter O

  1. Open Access Journal of Sports Medicine (EISSN: 1179-1543)
  2. Open Access Journal of Urology (EISSN: 1179-1551)
  3. Open Access Macedonian Journal of Medical Sciences (ISSN: 1857-9655)
  4. Open Access Medical Statistics (ISSN: 2230-3251)
  5. Open Access Rheumatology: Research and Reviews (ISSN: 1179-156X)
  6. Open Access Surgery (ISSN: 1178-7082)
  7. Open Agriculture (EISSN: 2391-9531)
  8. Open AIDS Journal (EISSN: 1874-6136)
  9. Open Analytical Chemistry Journal (ISSN: 1874-0650)
  10. Open Anthropological Research (EISSN: 2657-4233)
  11. Open Archaeology (ISSN: 2300-6560)
  12. Open Arts Journal (ISSN: 2050-3679)
  13. Open Astronomy (EISSN: 2543-6376)
  14. Open Biochemistry Journal (EISSN: 1874-091X)
  15. Open Biology (EISSN: 2046-2441)
  16. The Open biomedical engineering journal (EISSN: 1874-1207)
  17. Open Cardiovascular Medicine Journal (EISSN: 1874-1924)
  18. Open Ceramics (EISSN: 2666-5395)
  19. The Open chemical engineering journal (ISSN: 1874-1231)
  20. The Open chemical physics journal (ISSN: 1874-4125)
  21. Open Chemistry (EISSN: 2391-5420)
  22. The Open Clinical Chemistry Journal (ISSN: 1874-2416)
  23. Open Computer Science (EISSN: 2299-1093)
  24. The Open condensed matter physics journal (ISSN: 1874-186X)
  25. Open Cultural Studies (EISSN: 2451-3474)
  26. Open Dentistry Journal (EISSN: 1874-2106)
  27. Open Economics (EISSN: 2451-3458)
  28. Open Economies Review (ISSN: 0923-7992,EISSN: 1573-708X)
  29. Open Education Studies (ISSN: 2544-7831)
  30. Open Engineering (EISSN: 2391-5439)
  31. Open file report (ISSN: 0149-984X)
  32. Open Forum Infectious Diseases (ISSN: 2328-8957)
  33. Open Gender Journal (EISSN: 2512-5192)
  34. Open Geomechanics (EISSN: 2644-9676)
  35. Open Geosciences (EISSN: 2391-5447)
  36. Open Geospatial Data, Software and Standards (EISSN: 2363-7501)
  37. Open Health (ISSN: 2544-9826)
  38. Open Health Data (EISSN: 2054-7102)
  39. The Open Health Services and Policy Journal (ISSN: 1874-9240)
  40. Open Heart (ISSN: 2398-595X,EISSN: 2053-3624)
  41. Open Information Science (EISSN: 2451-1781)
  42. The Open inorganic chemistry journal (ISSN: 1874-0987)
  43. Open Journal for Legal Studies (EISSN: 2620-0619)
  44. Open Journal of Astrophysics (EISSN: 2565-6120)
  45. Open Journal of Bioresources (EISSN: 2056-5542)
  46. Open Journal of Cardiovascular Surgery (ISSN: 1179-0652)
  47. Open Journal of Humanities (EISSN: 2612-6966)
  48. Open journal of implant dentistry (ISSN: 2226-4507)
  49. Open Journal of Mathematical Analysis (ISSN: 2616-8103,EISSN: 2616-8111)
  50. Open Journal of Mathematical Optimization (EISSN: 2777-5860)
  51. Open Journal of Mathematical Sciences (ISSN: 2616-4906,EISSN: 2523-0212)
  52. Open Journal of Occupational Therapy (ISSN: 2168-6408)
  53. Open Journal of Psychiatry and Allied Sciences (ISSN: 2394-2053,EISSN: 2394-2061)
  54. Open Learning (ISSN: 0268-0513,EISSN: 1469-9958)
  55. Open Library of Humanities (ISSN: 2056-6700)
  56. Open Life Sciences (EISSN: 2391-5412)
  57. Open Linguistics (ISSN: 2300-9969)
  58. The Open Macromolecules Journal (ISSN: 1874-3439)
  59. Open Material Sciences (EISSN: 2544-7300)
  60. The Open Materials Science Journal (ISSN: 1874-088X)
  61. Open Mathematics (EISSN: 2391-5455)
  62. The Open Medical Informatics Journal (EISSN: 1874-4311)
  63. Open Medicinal Chemistry Journal (EISSN: 1874-1045)
  64. Open Medicine (EISSN: 2391-5463)
  65. Open Medicine (ISSN: 1911-2092)
  66. The Open Microbiology Journal (EISSN: 1874-2858)
  67. Open Military Studies (EISSN: 2545-3254)
  68. Open Mind (EISSN: 2470-2986)
  69. The Open Mineralogy Journal (ISSN: 1874-4567)
  70. Open Nanoscience Journal (ISSN: 1874-1401)
  71. The Open neuroimaging journal (EISSN: 1874-4400)
  72. The Open Neurology Journal (EISSN: 1874-205X)
  73. The open nursing journal (EISSN: 1874-4346)
  74. Open Ophthalmology Journal (ISSN: 1874-3641)
  75. The Open Organic Chemistry Journal (ISSN: 1874-0952)
  76. The Open Orthopaedics Journal (EISSN: 1874-3250)
  77. Open Philosophy (EISSN: 2543-8875)
  78. The Open physical chemistry journal (ISSN: 1874-0677)
  79. Open Physics (EISSN: 2391-5471)
  80. Open Political Science (EISSN: 2543-8042)
  81. Open Praxis (ISSN: 1369-9997,EISSN: 2304-070X)
  82. Open Psychology (EISSN: 2543-8883)
  83. Open Quaternary (EISSN: 2055-298X)
  84. Open Ranks
  85. Open research Africa (EISSN: 2752-6925)
  86. Open Research Europe (EISSN: 2732-5121)
  87. Open Respiratory Archives (EISSN: 2659-6636)
  88. Open Respiratory Medicine Journal (EISSN: 1874-3064)
  89. Open Review of Educational Research (ISSN: 2326-5507)
  90. Open Rheumatology Journal (EISSN: 1874-3129)
  91. Open Rivers (ISSN: 2471-190X)
  92. OPEN ROAD (ISSN: 0048-1947)
  93. Open Screens (ISSN: 2516-2888)
  94. Open Shelf (ISSN: 2368-1837)
  95. Open Sights
  96. Open Solutions Inc. MarketLine Company Profile
  97. The Open Source Business Resource (ISSN: 1913-6102)
  98. Open Source FOR You
  99. Open Source Jahrbuch
  100. The Open spectroscopy journal (ISSN: 1874-3838)