| Journal of Opioid Management | JOURNAL OF OPIOID MANAGEMENT | 1551-7489 |
| Journal of Optical Communications | JOURNAL OF OPTICAL COMMUNICATIONS | 0173-4911 |
| Journal of Optical Communications and Networking | J OPT COMMUN NETW | 1943-0620 |
| Journal of Optical Networking | J OPT NETW | 1536-5379 |
| Journal of Optical Technology (A Translation of Opticheskii Zhurnal) | J OPT TECHNOL+ | 1070-9762 |
| Journal of Optics | J OPTICS-UK | 2040-8978 |
| Journal of Optics A-pure and Applied Optics | J OPT A-PURE APPL OP | 1464-4258 |
| Journal of Optics B-quantum and Semiclassical Optics | | |
| Journal of Optics B-quantum and Semiclassical Optics | J OPT B-QUANTUM S O | 1464-4266 |
| Journal of Optics-India | JOURNAL OF OPTICS-INDIA | 0970-0374 |
| Journal of Optimization | JOURNAL OF OPTIMIZATION | 2356-752X |
| Journal of Optimization in Industrial Engineering | JOURNAL OF OPTIMIZATION IN INDUSTRIAL ENGINEERING | 2251-9904 |
| Journal of Optimization Theory and Applications | J OPTIMIZ THEORY APP | 0022-3239 |
| Journal of Optoelectronic and Biomedical Materials | JOURNAL OF OPTOELECTRONIC AND BIOMEDICAL MATERIALS | 2066-0049 |
| Journal of Optoelectronics and Advanced Materials | J OPTOELECTRON ADV M | 1454-4164 |
| Journal of Optometry | JOURNAL OF OPTOMETRY | 1888-4296 |
| Journal of Oral & Facial Pain and Headache | JOURNAL OF ORAL & FACIAL PAIN AND HEADACHE | 2333-0384 |
| Journal of Oral and Maxillofacial Pathology | JOURNAL OF ORAL AND MAXILLOFACIAL PATHOLOGY | 0973-029X |
| Journal of Oral and Maxillofacial Surgery | J ORAL MAXIL SURG | 0278-2391 |
| Journal of Oral and Maxillofacial Surgery Medicine and Pathology | JOURNAL OF ORAL AND MAXILLOFACIAL SURGERY MEDICINE AND PATHOLOGY | 2212-5558 |
| Journal of Oral Biology and Craniofacial Research | JOURNAL OF ORAL BIOLOGY AND CRANIOFACIAL RESEARCH | 2212-4268 |
| Journal of Oral Biosciences | JOURNAL OF ORAL BIOSCIENCES | 1880-3865 |
| Journal of Oral Health and Oral Epidemiology | JOURNAL OF ORAL HEALTH AND ORAL EPIDEMIOLOGY | 2322-1372 |
| Journal of Oral Implantology | J ORAL IMPLANTOL | 0160-6972 |
| Journal of Oral Medicine and Oral Surgery | JOURNAL OF ORAL MEDICINE AND ORAL SURGERY | 2608-1326 |
| Journal of Oral Microbiology | JOURNAL OF ORAL MICROBIOLOGY | 2000-2297 |
| Journal of Oral Pathology and Medicine | J ORAL PATHOL MED | 0904-2512 |
| Journal of Oral Rehabilitation | J ORAL REHABIL | 0305-182X |
| Journal of Oral Research | JOURNAL OF ORAL RESEARCH | 0719-2479 |
| Journal of Oral Science | JOURNAL OF ORAL SCIENCE | 1343-4934 |
| Journal of Organic Chemistry | J ORG CHEM | 0022-3263 |
| Journal of Organisational Studies and Innovation | JOURNAL OF ORGANISATIONAL STUDIES AND INNOVATION | 2056-9122 |
| Journal of Organisational Transformation & Social Change | JOURNAL OF ORGANISATIONAL TRANSFORMATION & SOCIAL CHANGE | 1477-9633 |
| Journal of Organizational and End User Computing | JOURNAL OF ORGANIZATIONAL AND END USER COMPUTING | 1546-2234 |
| Journal of Organizational Behavior | J ORGAN BEHAV | 0894-3796 |
| Journal of Organizational Behavior Management | J ORGAN BEHAV MANAGE | 0160-8061 |
| Journal Of Organizational Behavior Research | JOURNAL OF ORGANIZATIONAL BEHAVIOR RESEARCH | 2528-9705 |
| Journal of Organizational Change Management | J ORGAN CHANGE MANAG | 0953-4814 |
| Journal of Organizational Computing and Electronic Commerce | J ORG COMP ELECT COM | 1091-9392 |
| Journal of Organizational Effectiveness-People and Performance | JOURNAL OF ORGANIZATIONAL EFFECTIVENESS-PEOPLE AND PERFORMANCE | 2051-6614 |
| Journal of Organizational Ethnography | JOURNAL OF ORGANIZATIONAL ETHNOGRAPHY | 2046-6749 |
| Journal of Organometallic Chemistry | J ORGANOMET CHEM | 0022-328X |
| Journal of Ornithology | J ORNITHOL | 0021-8375 |
| Journal of Orofacial Orthopedics-Fortschritte der Kieferorthopadie | J OROFAC ORTHOP | 1434-5293 |
| Journal of Orofacial Pain | J OROFAC PAIN | 1064-6655 |
| Journal of Orofacial Sciences | JOURNAL OF OROFACIAL SCIENCES | 0975-8844 |
| Journal of Orthodontic Science | JOURNAL OF ORTHODONTIC SCIENCE | 2278-1897 |
| Journal of Orthodontics | JOURNAL OF ORTHODONTICS | 1465-3125 |
| Journal of Orthomolecular Medicine | JOURNAL OF ORTHOMOLECULAR MEDICINE | 0834-4825 |
| Journal of Orthopaedic and Sports Physical Therapy | J ORTHOP SPORT PHYS | 0190-6011 |
