- JACCP: journal of the American College of Clinical Pharmacy
- Jahresbericht der Deutschen Mathematiker-Vereinigung
- JAMA : the journal of the American Medical Association
- JAMA cardiology
- JAMA dermatology
- JAMA internal medicine
- JAMA neurology
- JAMA oncology
- JAMA ophthalmology
- JAMA otolaryngology-- head & neck surgery
- JAMA pediatrics
- JAMA psychiatry
- JAMA surgery
- Japan journal of nursing science : JJNS
- Japanese journal of applied physics
- Japanese journal of clinical oncology : JJCO
- Japanese journal of ophthalmology
- Japanese journal of radiology
- JBI database of systematic reviews and implementation reports
- JBI Library of systematic Reviews
- JBI reports
- JDR clinical and translational research
- JETP letters
- Jindal journal of business research
- JLB : journal of leukocyte biolog
- Joint, bone, spine
- JOM : the journal of the Minerals, Metals and Materials Society
- Journal de pédiatrie et de puériculture
- Journal der Deutschen Dermatologischen Gesellschaft : JDDG
- Journal for eighteenth-century studies
- Journal of agrarian change
- Journal of agricultural and environmental ethics
- Journal of agricultural and food chemistry
- Journal of agricultural, biological, and environmental statistics
- Journal of alcohol and drug education
- Journal of algebra
- Journal of algebraic combinatorics
- Journal of ambulatory care management
- Journal of analytical chemistry
- Journal of analytical toxicology
- Journal of anatomy
- Journal of animal breeding and genetics = Zeitschrift für Tierzüchtung und Züchtungsbiologie
- Journal of animal physiology and animal nutrition
- Journal of animal science
- Journal of anthropological archaeology
- Journal of antibiotics
- Journal of antimicrobial chemotherapy
- Journal of antitrust enforcement
- Journal of anxiety disorders
- Journal of applied animal nutrition