Walter Foster may refer to:Walter Foster (cricketer), Barbadian cricketer Walter Foster (mathematician), English mathematician Walter Edward Foster (1873–1947), Canadian politician and businessman in New Brunswick Walter T. Foster (1891–1981), American artist and publisher of art instruction books Walter Foster, 1st Baron Ilkeston (1840–1913), British physician and politician Walter W. V. Foster (1908–1944), Canadian politician