- Journal of Pediatric Orthopaedics-Part B
- Journal of Pediatric Rehabilitation Medicine
- Journal of Pediatric Surgery
- Journal of Pediatric Surgery Case Reports
- Journal of Pediatric Urology
- Journal of Pediatrics
- Journal of Pediatrics and Neonatology
- Journal of Peptide Research
- Journal of Peptide Science
- Journal of PeriAnesthesia Nursing
- Journal of Perinatal Medicine
- Journal of Periodontal Research
- Journal of Peritoneum (and other serosal surfaces)
- Journal of Personalized Medicine
- Journal of Pest Science
- Journal of Pharmaceutical and Biomedical Analysis
- Journal of Pharmaceutical Care & Health Systems
- Journal of Pharmaceutical Medicine
- Journal of Pharmacological and Toxicological Methods
- Journal of Pharmacology
- Journal of Pharmacology and Experimental Therapeutics
- Journal of Pharmacy & Pharmaceutical Sciences
- Journal of Pharmacy and Pharmacology
- Journal of Photochemistry and Photobiology A-Chemistry
- Journal of Photochemistry and Photobiology. B, Biology
- Journal of Physical Chemistry A
- Journal of Physical Chemistry B
- Journal of Physical Education & Health - Social Perspective
- Journal of Physical Organic Chemistry
- Journal of Physics. Conference Series
- Journal of Physics D-Applied Physics
- Journal of Physiology
- Journal of Physiology and Pharmacology
- Journal of Pineal Research
- Journal of Plant Physiology
- Journal of Polymer Engineering
- Journal of Poultry Science
- Journal of Power Sources
- Journal of Pre-Clinical and Clinical Research
- Journal of Proteome Research
- Journal of Psychiatric Practice
- Journal of Psychiatric Research
- Journal of Psychiatry & Neuroscience : JPN
- Journal of Psychopharmacology
- Journal of Psychosomatic Research
- Journal of Public Health (Heidelberg)
- Journal of Public Health, Nursing and Medical Rescue
- Journal of Public Health (Oxford)
- Journal of Radioanalytical and Nuclear Chemistry
- Journal of Raman Spectroscopy
- Journal of Rare Cardiovascular Diseases
- Journal of Reconstructive Microsurgery
- Journal of Refractive Surgery
- Journal of Religion and Health
- Journal of Renal Nutrition
- Journal of Reproductive Immunology
- Journal of Research in Nursing
- Journal of Rheumatology
- Journal of Saudi Chemical Society
- Journal of Science and Medicine in Sport
- Journal of Scleroderma and Related Disorders
- Journal of Separation Science
- Journal of Single Molecule Research
- Journal of Sol-Gel Science and Technology
- Journal of Sound and Vibration
- Journal of Spinal Studies and Surgery
- Journal of Sports Science and Medicine
- Journal of Steroid Biochemistry
- Journal of Stomatology (d. Czasopismo Stomatologiczne)
- Journal of Strength and Conditioning Research