- Internet technology letters
- Interpretation
- Intervention : international journal of mental health, psychosocial work, and counselling in areas of armed conflict
- Intervention in school and clinic
- Interventional cardiology clinics
- Invasive plant science and management
- Inventiones mathematicae
- Inverse problems
- Invertebrate biology
- Invertebrate neuroscience
- Investigación y educación en enfermería : revista de la Facultad de Enfermería, Universidad de Antioquia
- Investigational new drugs
- Investigative radiology
- IOP conference series Earth and environmental science / Institute of Physics
- IOP conference series Materials science and engineering / Institute of Physics
- IPPR progressive review
- Iranian journal of cancer prevention
- Iranian journal of child neurology
- Iranian journal of public health
- Iranian studies : bulletin of the Society for Iranian Cultural and Social Studies
- Iraq
- Irish historical studies : joint journal of the Irish Historical Society and the Ulster Society for Irish Historical Studies
- Irish journal of medical science
- Irish journal of psychological medicine
- Irrigation and drainage
- Irrigation science
- ISBT science series
- Israel journal of chemistry
- Israel law review
- ISRN cardiology
- ISRN dermatology
- ISRN endocrinology
- ISRN hematology
- ISRN neurology
- ISRN nursing
- ISRN oncology
- ISRN orthopedics
- ISRN pathology
- ISRN pediatrics
- ISRN urology
- Issues in comprehensive pediatric nursing
- Issues in law & medicine
- Issues in mental health nursing
- Itinerario
- ITNow
- IUBMB life
- Izvestiya Atmospheric and oceanic physics / Russian Academy of Sciences
- JAAPA : official journal of the American Academy of Physician Assistants
- JACC Cardiovascular imaging
- JACC Cardiovascular interventions