A nozzle for continuous casting which is prevented from clogging due to alumina deposition is disclosed, wherein the inner wall member is made of a refractory material having a carbon content of 1% to 10% by weight; a material other than carbon in the refractory material has a grain size of not more than 420 .mu.m; the inner wall member is integrally molded with the outer nozzle body to form an integral structure; and said inner wall member has a thickness of 2 mm to 12 mm.