Hiatus hernia is rather comon in Europan but it is known to be rare in Korean. The incidence in Korean has been reported to be 1.4 % or 14 cases in 1,000 consecutive esophagrams performed at this department. All the cases reported were minimal or first degree. Cause of low incidence of hiatus hernia in Korean is not clear although an ethnical difference has been implicated. In this paper we present a case of 3rd degree hiatus hernia observed in a 76 year-old Korean woman. Roentgnological features of this condition are also reviewed.