Sunay Erdem (born 17 March 1971) is a Turkish Landscape architect (graduated) and self-taught Architect. He is one of Turkish most prolific Landscape architects of his generation. Sunay Erdem founded Erdem Architects with his brother, Günay Erdem in 1998. Sunay Erdem designed many urban design projects in more than 40 different countries. Erdem has been using free-hand sketching method since 1992 and he has more than 700 free-hand perspectives.