{| |} The Stampe et Vertongen RSV.26/140, RSV.26/180, and RSV.26 Lynx were a family of training biplanes designed by Alfred Renard and built by Stampe et Vertongen in Belgium in the 1920s. They were produced as a response to a requirement by the Belgian Air Force, which became their biggest user, although private owners also bought a small number. Histories of Stampe et Vertongen differ on the number of RSV.26/140s and RSV.26/180s produced, with figures as disparate as 17 and 98 published.