IOP

IOP may refer to:

Organizations

 * Institute of Optronics, a Pakistani technical organization
 * Institute of Physics, London-based professional association for physicists
 * IOP Publishing, its publishing company
 * Institute of Physics, Bhubaneswar, an Indian research institute
 * Institute of Psychiatry, Psychology and Neuroscience, a school of King's College London, England, previously known as Institute of Psychiatry (IoP)
 * Institute of Play, an American educational corporation

Science and technology

 * UGV Interoperability Profile
 * Cromemco IOP, an input/output processor S-100 card
 * Intraocular pressure, the fluid pressure inside the eye
 * Intensive outpatient program, a rehabilitation therapy

Other uses

 * Independent Olympic Participant: IOC country code
 * Integrated Options Portfolio, a portfolio of investments allowing the owner to change those investments
 * Isle of Palms, South Carolina, US
 * Italian occult psychedelia, a subgenre of Italian psychedelic music