"OPO" or "Opo" can refer to:
OnePlus One, a smartphone model produced by the Chinese company OnePlus Optical parametric oscillator Francisco de Sá Carneiro Airport, known by IATA code OPO Organ procurement organization, which helps to arrange organ donation One-person operation in transport, where operation of a train, bus, or tram is by the driver alone, without a conductor Lagenaria siceraria, a squash commonly known as opo Opo the Dolphin, a famous dolphin in New Zealand Online Presence Ontology Orlando Philharmonic Orchestra Orlando Pops Orchestra Ovamboland People's Organization
See also Opos (disambiguation) Oppo (disambiguation)