I John Hadji Argyris (Greek: Ιωάννης Αργύρης; * Agostu 19 1913 i king Volos, Greece; – Abril 2 2004 king Stuttgart) iya ing metung kareng linalang keng Finite Element Method (FEM) at dati Professor king University ning Stuttgart ampong Director na ning Institute para Statics ampong Dynamics na ning Aerospace Structures.