OHP may refer to: Haute-Provence Observatory (), an astronomical observatory in the southeast of France Occupational health psychology, an interdisciplinary area of psychology that is concerned with the health and safety of workers Oklahoma Highway Patrol, a major state law enforcement agency of the government of Oklahoma Open House Party, an American radio show hosted on Saturday and Sunday nights by Kannon Open Humanities Press, an international open access publishing initiative in the humanities Order of the Holy Paraclete, an Anglican religious community Oregon Health Plan, Oregon's state Medicaid program Overall hemostatic potential, a global test of coagulation and fibrinolysis Overhead press, a weight training exercise with many variations Overhead projector, a device that uses light to project an enlarged image on a screen Oliver Hazard Perry-class Frigate, a class of guided missile frigates that were designed by US in mid-70s. Overhead Pole, an above ground pole used to support span wires for a tram network.