Companhia Aeronáutica Paulista (CAP) was a Brazilian aircraft manufacturer established in São Paulo in 1942. The same year, it acquired the assets of Empresa Aeronáutica Ypiranga and with them, the design that was to become its most important product, the CAP-4. Despite strong sales of this aircraft (nearly 800 were built), the company ran into financial problems in 1948 and was forced to close. The remaining assets were nationalized, with some eventually being taken over by Neiva.