Infeld may refer to:
Leopold Infeld (1898–1968), Polish physicist Helen Infeld (1907–1993), American-born mathematics professor married to Leopold Infeld Born–Infeld model, an example of nonlinear electrodynamics Emily Infeld (born 1990), American long-distance runner Thomastik-Infeld, Austrian company that makes strings for instruments Einstein–Infeld–Hoffmann equations, equations of motion