Seamax Aircraft is a private aerospace manufacturer headquartered in São João da Boa Vista, São Paulo, Brazil. They specialize in producing amphibious light sport aircraft (LSA). The company was established in 1997 by designer and engineer Miguel Rosário, with the goal of producing amphibious planes. They began production of the Seamax M-22 in 2001, after a successful proof-of-concept flight the previous year. As of 2021, they have built 160 planes, with the latest production occurring in the United States. Seamax Aircraft is recognized by ANAC as an ALE Special, and is one of several Brazilian aircraft manufacturers. Their website is available at https://www.seamaxaircraft.com/.