- Journal of Integrative Neuroscience
- Journal of Intelligent & Fuzzy Systems
- Journal of Intensive Care Medicine
- Journal of Interferon & Cytokine Research
- Journal of International Advanced Otology
- Journal of International Medical Research
- Journal of Interventional Cardiac Electrophysiology : an international journal of arrhythmias and pacing
- Journal of Interventional Cardiology
- Journal of Invertebrate Pathology
- Journal of Investigational Allergology and Clinical Immunology
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- Journal of KONBiN
- Journal of Korea Tappi
- Journal of Labelled Compounds & Radiopharmaceuticals
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- Journal of Laparoendoscopic & Advanced Surgical Techniques
- Journal of Lasers in Medical Sciences
- Journal of Leukemia
- Journal of Life and Medical Sciences (d. Nauki Przyrodnicze)
- Journal of Liquid Chromatography
- Journal of Liquid Chromatography & Related Technologies
- Journal of Lower Genital Tract Disease
- Journal of Luminescence
- Journal of Magnetic Resonance Imaging
- Journal of Mass Spectrometry
- Journal of Materials Chemistry B
- Journal of Materials Science
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- Journal of Materials Science and Nanotechnology
- Journal of Maternal-Fetal & Neonatal Medicine
- Journal of Maxillofacial Surgery
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- Journal of Medical Internet Research
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- Journal of Modern Science
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- Journal of Multidisciplinary Healthcare
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- Journal of Muscle Research and Cell Motility
- Journal of Muslim Mental Health
- Journal of Nanobiotechnology
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