TRO or tro may refer to: Music Tro (instrument), Cambodian string instrument "Tro" (song), 1996, Marie Fredriksson The Richmond Organization, Inc., American music publisher Other uses TRO (gene) or trophinin, a human protein involved in cell adhesion TRO (company), American architects Televisión Regional del Oriente, Colombian television network Tamils Rehabilitation Organisation Temporary restraining order, in American law Taree Airport, New South Wales, Australia (IATA code: TRO)