Journals starting with O
197 journals, alphabetical. Cites/paper is the OpenAlex 2-year citation rate — a transparent signal, not a licensed Impact Factor.
- O Eixo e a Roda Revista de Literatura Brasileirano Scimago quartile0.1 cites/paperFederal University of Minas GeraisDOAJ, Web of Science
- OALibno Scimago quartile0.5 cites/paperScientific Research PublishingPubMedflagged
- ObesityQ14.1 cites/paperWileyScopus, Web of Science, PubMed
- Obesity and metabolismQ41.1 cites/paperUP PrintDOAJ, Scopus
- Obesity FactsQ15.0 cites/paperKarger PublishersDOAJ, Scopus, Web of Science, PubMed
- Obesity Research & Clinical PracticeQ21.5 cites/paperElsevier BVScopus, Web of Science, PubMed
- Obesity ReviewsQ17.1 cites/paperWileyScopus, Web of Science, PubMed
- Obesity SurgeryQ12.8 cites/paperSpringer Science+Business MediaScopus, Web of Science, PubMed
- Obstetric MedicineQ31.0 cites/paperSAGE PublishingScopus, Web of Science, PubMed
- Obstetrical & Gynecological SurveyQ20.7 cites/paperLippincott Williams & WilkinsScopus, Web of Science, PubMed
- Obstetrics & Gynecology ScienceQ22.5 cites/paperIndonesian Society of Obstetrics and GynecologyDOAJ, Scopus, Web of Science, PubMed
- Obstetrics and GynecologyQ11.7 cites/paperLippincott Williams & WilkinsScopus, Web of Science, PubMed
- Obstetrics Gynaecology & Reproductive MedicineQ30.7 cites/paperElsevier BVScopus, PubMed
- Occupational and Environmental MedicineQ12.6 cites/paperBMJScopus, Web of Science, PubMed
- Occupational Therapy In Health CareQ20.8 cites/paperTaylor & FrancisScopus, Web of Science, PubMed
- Occupational Therapy in Mental HealthQ31.0 cites/paperTaylor & FrancisScopus, Web of Science, PubMed
- Occupational Therapy InternationalQ11.1 cites/paperHindawi Publishing CorporationDOAJ, Scopus, Web of Science, PubMed
- Ocean & Coastal ManagementQ16.0 cites/paperElsevier BVScopus, Web of Science, PubMed
- Ocean and Coastal ResearchQ31.3 cites/paperUniversity of São PauloDOAJ, Scopus, Web of Science
- Ocean Development & International LawQ11.9 cites/paperTaylor & FrancisScopus, Web of Science
- Ocean DynamicsQ21.9 cites/paperSpringer Science+Business MediaScopus, Web of Science, PubMed
- Ocean EngineeringQ16.1 cites/paperElsevier BVScopus, Web of Science
- Ocean ModellingQ13.1 cites/paperElsevier BVScopus, Web of Science, PubMed
- Ocean scienceQ13.1 cites/paperCopernicus PublicationsDOAJ, Scopus, Web of Science
- Ocean Yearbook OnlineQ22.5 cites/paperBrillScopus, Web of Science
- OceaniaQ30.8 cites/paperWileyScopus, Web of Science, PubMed
- OceanologiaQ11.4 cites/paperElsevier BVDOAJ, Scopus, Web of Science
- Oceanological and Hydrobiological StudiesQ30.9 cites/paperDe GruyterDOAJ, Scopus, Web of Science
- OceanologyQ30.7 cites/paperPleiades PublishingScopus, Web of Science, PubMed
- Ocular Immunology and InflammationQ21.7 cites/paperTaylor & FrancisScopus, Web of Science, PubMed
- OdontologyQ12.1 cites/paperSpringer Science+Business MediaScopus, Web of Science, PubMed
- Odrodzenie i Reformacja w PolsceQ40.2 cites/paperWydawnictwo Naukowe SemperDOAJ, Scopus
- OecologiaQ12.3 cites/paperSpringer Science+Business MediaScopus, Web of Science, PubMed
- Oecologia AustralisQ40.7 cites/paperFederal University of Rio de JaneiroScopus
- OENO OneQ12.7 cites/paperADERADOAJ, Scopus, Web of Science
- OikosQ12.7 cites/paperWileyScopus, Web of Science, PubMed
- Oil and Gas Studiesno Scimago quartile0.1 cites/paperDOAJ
- Oil ShaleQ31.7 cites/paperEstonian Academy PublishersDOAJ, Scopus, Web of Scienceflagged
- Old Testament EssaysQ30.3 cites/paperOTSSADOAJ, Scopus
- Oman Journal of OphthalmologyQ30.6 cites/paperMedknowDOAJ, Scopus, PubMed
- Oman Medical JournalQ30.5 cites/paperOman Medical Specialty BoardDOAJ, Scopus, PubMed
- OmegaQ16.5 cites/paperElsevier BVScopus, Web of Science, PubMed
- OMEGA - Journal of Death and DyingQ21.6 cites/paperSAGE PublishingScopus, Web of Science, PubMed
- OMICS A Journal of Integrative BiologyQ32.6 cites/paperMary Ann Liebert, Inc.Scopus, Web of Science, PubMed
- Oñati Socio-legal SeriesQ21.0 cites/paperOñati International Institute for the Sociology of LawDOAJ, Scopus, Web of Science
- OncogeneQ16.6 cites/paperSpringer NatureScopus, Web of Science, PubMed
- OncogenesisQ14.3 cites/paperSpringer NatureDOAJ, Scopus, Web of Science, PubMed
- OncoImmunologyQ16.4 cites/paperLandes BioscienceDOAJ, Scopus, Web of Science, PubMed
- ONCOLOGIEQ31.8 cites/paperSpringer Science+Business MediaDOAJ, Scopus, Web of Science, PubMed
- OncologyQ21.8 cites/paperKarger PublishersScopus, Web of Science, PubMed
- Oncology LettersQ32.1 cites/paperSpandidos PublishingScopus, Web of Science, PubMed
- Oncology nursing forumQ30.9 cites/paperOncology Nursing SocietyScopus, Web of Science, PubMed
- Oncology ReportsQ23.0 cites/paperElsevier BVScopus, Web of Science, PubMed
- Oncology Research and TreatmentQ31.1 cites/paperKarger PublishersScopus, Web of Science, PubMed
- Oncology Research Featuring Preclinical and Clinical Cancer TherapeuticsQ12.5 cites/paperCognizant Communication CorporationScopus, Web of Science, PubMed
- OncotargetQ22.2 cites/paperImpact Journals LLCScopus, PubMed
- OncoTargets and TherapyQ22.2 cites/paperDove Medical PressScopus, Web of Science, PubMed
- One EarthQ110.4 cites/paperElsevier BVScopus, Web of Science, PubMed
- One HealthQ14.2 cites/paperElsevier BVDOAJ, Scopus, Web of Science, PubMed
- Öneri Dergisino Scimago quartile0.7 cites/paperMarmara UniversityTR Dizin
- Online Information ReviewQ15.7 cites/paperEmerald Publishing LimitedScopus, Web of Science
- Online Journal of Public Health InformaticsQ21.9 cites/paperUniversity of Illinois at ChicagoDOAJ, Scopus, Web of Science, PubMed
- Online LearningQ14.2 cites/paperOnline Learning ConsortiumDOAJ, Scopus, Web of Science, PubMed
- ONOMAZEINQ30.2 cites/paperPontifical Catholic University of ChileScopus, Web of Science
- Open AstronomyQ40.6 cites/paperDe GruyterDOAJ, Scopus, Web of Science
- Open BiologyQ14.5 cites/paperRoyal SocietyDOAJ, Scopus, Web of Science, PubMed
- Open CeramicsQ23.3 cites/paperElsevier BVDOAJ, Scopus, Web of Science
- Open ChemistryQ23.2 cites/paperDe Gruyter OpenDOAJ, Scopus, Web of Science, PubMed
- Open Economies ReviewQ31.4 cites/paperSpringer Science+Business MediaScopus, Web of Science
- Open EngineeringQ32.8 cites/paperDe GruyterDOAJ, Scopus, Web of Science
- Open Forum Infectious DiseasesQ11.2 cites/paperOxford University PressDOAJ, Scopus, Web of Science, PubMed
- Open GeosciencesQ22.2 cites/paperDe Gruyter OpenDOAJ, Scopus, Web of Science
- Open HeartQ12.6 cites/paperBMJDOAJ, Scopus, Web of Science, PubMed
- Open House InternationalQ12.1 cites/paperEmerald Publishing LimitedScopus, Web of Science
- Open Journal of Applied Sciencesno Scimago quartile0.7 cites/paperScientific Research PublishingPubMedflagged
- Open Journal of Nursingno Scimago quartile0.5 cites/paperScientific Research PublishingPubMedflagged
- Open Journal of Social Sciencesno Scimago quartile0.6 cites/paperScientific Research PublishingPubMedflagged
- Open Learning The Journal of Open Distance and e-LearningQ22.6 cites/paperTaylor & FrancisScopus, Web of Science
- Open Life SciencesQ22.2 cites/paperDe Gruyter OpenDOAJ, Scopus, Web of Science, PubMed
- Open MathematicsQ30.8 cites/paperDe Gruyter OpenDOAJ, Scopus, Web of Science
- Open MedicineQ21.8 cites/paperDe Gruyter OpenDOAJ, Scopus, Web of Science, PubMed
- Open PhysicsQ33.5 cites/paperDe Gruyter OpenDOAJ, Scopus, Web of Science
- Open Research EuropeQ21.3 cites/paperEuropean CommissionDOAJ, Scopus, PubMed
- Open Veterinary JournalQ21.1 cites/paperUniversity of TripoliDOAJ, Scopus, Web of Science, PubMed
- Operational ResearchQ12.4 cites/paperSpringer Science+Business MediaScopus, Web of Science
- Operations ResearchQ13.5 cites/paperInstitute for Operations Research and the Management SciencesScopus, Web of Science, PubMed
- Operations Research LettersQ21.0 cites/paperElsevier BVScopus, Web of Science, PubMed
- Operative DentistryQ21.8 cites/paperIndiana University School of DentistryScopus, Web of Science, PubMed
- Operative NeurosurgeryQ21.0 cites/paperLippincott Williams & WilkinsScopus, Web of Science, PubMed
- Operative Orthopädie und TraumatologieQ21.2 cites/paperSpringer NatureScopus, Web of Science, PubMed
- Operative Techniques in OrthopaedicsQ40.5 cites/paperElsevier BVScopus, Web of Science, PubMed
- Operative Techniques in Otolaryngology-Head and Neck SurgeryQ30.6 cites/paperElsevier BVScopus, PubMed
- Operative Techniques in Thoracic and Cardiovascular SurgeryQ20.6 cites/paperElsevier BVScopus, PubMed
- Operators and MatricesQ30.7 cites/paperUniversity of ZagrebScopus, Web of Science
- Ophthalmic and Physiological OpticsQ13.6 cites/paperWileyScopus, Web of Science, PubMed
- Ophthalmic EpidemiologyQ11.9 cites/paperTaylor & FrancisScopus, Web of Science, PubMed
- Ophthalmic GeneticsQ20.9 cites/paperTaylor & FrancisScopus, Web of Science, PubMed
- Ophthalmic Plastic and Reconstructive SurgeryQ21.1 cites/paperLippincott Williams & WilkinsScopus, Web of Science, PubMed
- Ophthalmic ResearchQ12.2 cites/paperKarger PublishersDOAJ, Scopus, Web of Science, PubMed
- Ophthalmic surgery, lasers & imaging retinaQ20.9 cites/paperScopus, Web of Science, PubMed
- OphthalmologicaQ22.0 cites/paperKarger PublishersScopus, Web of Science, PubMed
- OphthalmologyQ13.8 cites/paperElsevier BVScopus, Web of Science, PubMed
- Ophthalmology and TherapyQ14.0 cites/paperAdis, Springer HealthcareDOAJ, Scopus, Web of Science, PubMed
- Ophthalmology RetinaQ12.3 cites/paperElsevier BVScopus, Web of Science, PubMed
- Ophthalmology ScienceQ13.1 cites/paperElsevier BVDOAJ, Scopus, Web of Science, PubMed
- OPSEARCHQ21.9 cites/paperSpringer Science+Business MediaScopus, Web of Science
- OpticaQ18.4 cites/paperOptica Publishing GroupDOAJ, Scopus, Web of Science, PubMed
- Optical and Quantum Electronicsno Scimago quartile4.9 cites/paperSpringer Science+Business MediaScopus, Web of Science, PubMed
- Optical EngineeringQ31.1 cites/paperSPIEScopus, Web of Science, PubMed
- Optical Fiber TechnologyQ23.0 cites/paperElsevier BVScopus, Web of Science
- Optical MaterialsQ15.7 cites/paperElsevier BVScopus, Web of Science, PubMed
- Optical Materials ExpressQ22.8 cites/paperOptica Publishing GroupDOAJ, Scopus, Web of Science, PubMed
- Optical ReviewQ41.2 cites/paperSpringer Science+Business MediaScopus, Web of Science, PubMed
- Optics & Laser TechnologyQ14.7 cites/paperElsevier BVScopus, Web of Science, PubMed
- Optics and Lasers in EngineeringQ14.2 cites/paperElsevier BVScopus, Web of Science, PubMed
- Optics and Precision EngineeringQ30.5 cites/paperScopus
- Optics and SpectroscopyQ40.6 cites/paperPleiades PublishingScopus, Web of Science, PubMed
- Optics CommunicationsQ22.9 cites/paperElsevier BVScopus, Web of Science, PubMed
- Optics ContinuumQ31.6 cites/paperDOAJ, Scopus, Web of Science, PubMed
- Optics ExpressQ13.5 cites/paperOptica Publishing GroupDOAJ, Scopus, Web of Science, PubMed
- Optics LettersQ13.5 cites/paperOptica Publishing GroupScopus, Web of Science, PubMed
- OptikQ23.9 cites/paperElsevier BVScopus, PubMed
- Optimal Control Applications and MethodsQ23.3 cites/paperWileyScopus, Web of Science, PubMed
- OptimizationQ11.4 cites/paperTaylor & FrancisScopus, Web of Science, PubMed
- Optimization and EngineeringQ21.9 cites/paperSpringer Science+Business MediaScopus, Web of Science, PubMed
- Optimization LettersQ21.1 cites/paperSpringer Science+Business MediaScopus, Web of Science, PubMed
- Optimization methods & softwareQ21.9 cites/paperTaylor & FrancisScopus, Web of Science, PubMed
- Opto-Electronics ReviewQ30.7 cites/paperElsevier BVScopus, Web of Science
- Optoelectronics LettersQ32.0 cites/paperSpringer Science+Business MediaScopus, Web of Science, PubMed
- Optometry and Vision ScienceQ12.3 cites/paperLippincott Williams & WilkinsScopus, Web of Science, PubMed
- OR SpectrumQ23.3 cites/paperSpringer Science+Business MediaScopus, Web of Science, PubMed
- Oral and Maxillofacial SurgeryQ21.8 cites/paperSpringer Science+Business MediaScopus, Web of Science, PubMed
- Oral and Maxillofacial Surgery Clinics of North AmericaQ21.2 cites/paperElsevier BVScopus, Web of Science, PubMed
- Oral DiseasesQ12.6 cites/paperWileyScopus, Web of Science, PubMed
- Oral Microbiology and Immunologyno Scimago quartile0.9 cites/paperWileyPubMed
- Oral OncologyQ12.3 cites/paperElsevier BVScopus, Web of Science, PubMed
- Oral RadiologyQ22.1 cites/paperSpringer Science+Business MediaScopus, Web of Science, PubMed
- Oral Surgery Oral Medicine Oral Pathology and Oral RadiologyQ20.5 cites/paperElsevier BVScopus, Web of Science, PubMed
- OrbisQ30.6 cites/paperElsevier BVScopus, PubMed
- Orbis LitterarumQ10.1 cites/paperWileyScopus, Web of Science, PubMed
- OrbitQ30.7 cites/paperTaylor & FrancisScopus, Web of Science, PubMed
- Ore Geology ReviewsQ13.6 cites/paperElsevier BVDOAJ, Scopus, Web of Science, PubMed
- Organic & Biomolecular ChemistryQ22.8 cites/paperRoyal Society of ChemistryScopus, Web of Science, PubMed
- Organic Chemistry FrontiersQ14.7 cites/paperRoyal Society of ChemistryScopus, Web of Science, PubMed
- Organic ElectronicsQ23.7 cites/paperElsevier BVScopus, Web of Science, PubMed
- Organic GeochemistryQ22.3 cites/paperElsevier BVScopus, Web of Science, PubMed
- Organic LettersQ14.8 cites/paperAmerican Chemical SocietyScopus, Web of Science, PubMed
- Organic Preparations and Procedures InternationalQ41.1 cites/paperTaylor & FrancisScopus, Web of Science, PubMed
- Organic Process Research & DevelopmentQ13.6 cites/paperAmerican Chemical SocietyScopus, Web of Science, PubMed
- Organised SoundQ10.2 cites/paperCambridge University PressScopus, Web of Science
- Organisms Diversity & EvolutionQ22.0 cites/paperSpringer Science+Business MediaScopus, Web of Science, PubMed
- OrganizationQ12.2 cites/paperSAGE PublishingScopus, Web of Science
- Organization & EnvironmentQ18.2 cites/paperSAGE PublishingScopus, Web of Science, PubMed
- Organization ScienceQ17.8 cites/paperInstitute for Operations Research and the Management SciencesScopus, Web of Science, PubMed
- Organization StudiesQ13.8 cites/paperSAGE PublishingScopus, Web of Science, PubMed
- Organizational Behavior and Human Decision ProcessesQ16.0 cites/paperElsevier BVScopus, Web of Science, PubMed
- Organizational Behavior Teaching ReviewQ12.4 cites/paperSAGE PublishingScopus, Web of Science, PubMed
- Organizational DynamicsQ17.2 cites/paperElsevier BVScopus, Web of Science, PubMed
- OrganometallicsQ22.2 cites/paperAmerican Chemical SocietyScopus, Web of Science, PubMed
- Oriental InsectsQ30.7 cites/paperTaylor & FrancisScopus, Web of Science
- Oriental Journal Of Chemistryno Scimago quartile1.1 cites/paperOriental Scientific Publishing CompanyWeb of Science
- Oriental Pharmacy and Experimental MedicineQ21.2 cites/paperSpringer Science+Business MediaScopus, Web of Science, PubMed
- ORLQ21.0 cites/paperKarger PublishersScopus, Web of Science, PubMed
- Ornithological ApplicationsQ11.4 cites/paperOxford University PressScopus, Web of Science, PubMed
- Orphanet Journal of Rare DiseasesQ13.3 cites/paperBioMed CentralDOAJ, Scopus, Web of Science, PubMed
- Orthodontics and Craniofacial ResearchQ12.8 cites/paperWileyScopus, Web of Science, PubMed
- Orthopaedic Journal of Sports MedicineQ11.4 cites/paperSAGE PublishingDOAJ, Scopus, Web of Science, PubMed
- Orthopaedic SurgeryQ12.9 cites/paperWileyDOAJ, Scopus, Web of Science, PubMed
- Orthopaedics & Traumatology Surgery & ResearchQ12.3 cites/paperElsevier BVScopus, Web of Science, PubMed
- Orthopaedics and TraumaQ40.6 cites/paperElsevier BVScopus, PubMed
- Orthopedic ReviewsQ22.1 cites/paperPAGEPress (Italy)DOAJ, Scopus, Web of Science, PubMed
- OrthopedicsQ21.5 cites/paperSlack Incorporated (United States)Scopus, Web of Science, PubMed
- Orvosi HetilapQ40.9 cites/paperAkadémiai KiadóScopus, Web of Science, PubMed
- OryxQ20.9 cites/paperCambridge University PressDOAJ, Scopus, Web of Science, PubMed
- Osgoode Hall law journalQ20.3 cites/paperRoutledgeDOAJ, Scopus, Web of Science, PubMed
- Osteoarthritis and CartilageQ11.3 cites/paperElsevier BVScopus, Web of Science, PubMed
- Osteoporosis and Bone Diseasesno Scimago quartile0.5 cites/paperDOAJ
- Osteoporosis InternationalQ13.8 cites/paperSpringer Science+Business MediaScopus, Web of Science, PubMed
- Österreichische Wasser- und Abfallwirtschaftno Scimago quartile0.5 cites/paperSpringer Science+Business MediaPubMed
- OstrichQ31.0 cites/paperTaylor & FrancisScopus, Web of Science
- OTJR Occupational Therapy Journal of ResearchQ21.5 cites/paperSAGE PublishingScopus, Web of Science, PubMed
- Otolaryngologia PolskaQ31.4 cites/paperIndex Copernicus International S.A.Scopus, Web of Science, PubMed
- Otolaryngologic Clinics of North AmericaQ21.6 cites/paperElsevier BVScopus, Web of Science, PubMed
- OtolaryngologyQ12.6 cites/paperWileyScopus, Web of Science, PubMed
- Otology & NeurotologyQ11.6 cites/paperLippincott Williams & WilkinsScopus, Web of Science, PubMed
- Outlook on AgricultureQ12.5 cites/paperSAGE PublishingScopus, Web of Science, PubMed
- Ovidius University Annals Economic Sciences Seriesno Scimago quartile0.6 cites/paperOvidius University PressDOAJ
- Oxford Bulletin of Economics and StatisticsQ11.4 cites/paperWileyScopus, Web of Science, PubMed
- Oxford Development StudiesQ21.3 cites/paperTaylor & FrancisScopus, Web of Science
- Oxford Economic PapersQ24.0 cites/paperOxford University PressScopus, Web of Science, PubMed
- Oxford Journal of ArchaeologyQ10.5 cites/paperWileyScopus, Web of Science
- Oxford Journal of Legal StudiesQ22.2 cites/paperOxford University PressScopus, Web of Science, PubMed
- Oxford Medical Case ReportsQ40.6 cites/paperOxford University PressDOAJ, Scopus, Web of Science, PubMed
- Oxford Review of Economic PolicyQ23.1 cites/paperOxford University PressScopus, Web of Science, PubMed
- Oxford Review of EducationQ13.2 cites/paperTaylor & FrancisScopus, Web of Science, PubMed
- Oxidative Medicine and Cellular LongevityQ11.1 cites/paperHindawi Publishing CorporationScopus, PubMed
- Ozone Science and EngineeringQ21.8 cites/paperTaylor & FrancisScopus, Web of Science, PubMed