"OPO" or "Opo" can refer to:
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OnePlus One, a smartphone model produced by the Chinese company OnePlus
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Optical parametric oscillator
An optical parametric oscillator (OPO) is a parametric oscillator that oscillates at optical frequencies. It converts an input laser wave (called "pump") with frequency \omega_p into two output waves of lower frequency (\omega_s, \omega_i) by mean ...
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Francisco de Sá Carneiro Airport
Francisco Sá Carneiro Airport or simply Porto Airport (formerly ''Pedras Rubras Airport'') is an international airport near Porto (Oporto), Portugal. It is located northwest of the Clérigos Tower in the centre of Porto, in the municipaliti ...
, known by IATA code OPO
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Organ procurement organization In the United States, an organ procurement organization (OPO) is a non-profit organization that is responsible for the evaluation and procurement of deceased-donor organs for organ transplantation
Organ transplantation is a medical procedure in ...
, which helps to arrange organ donation
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One-man operation
One-person operation (OPO), also known as driver-only operation (DOO), one-man operation (OMO), single person train operation (SPTO), or one-person train operation (OPTO), similarly to Driver Controlled Operation, is operation of a train, bus ...
, also known as one person operation in road passenger transport where a driver of a vehicle has sole responsibility for operating the vehicle
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Lagenaria siceraria
Calabash (; ''Lagenaria siceraria''), also known as bottle gourd, white-flowered gourd, long melon, birdhouse gourd, New Guinea bean, Tasmania bean, and opo squash, is a vine grown for its fruit. It can be either harvested young to be consumed ...
, a squash commonly known as opo
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Opo the Dolphin, a famous dolphin in New Zealand
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Online Presence Ontology
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Orlando Philharmonic Orchestra
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Orlando Pops Orchestra
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Ovamboland People's Organization
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