Hasegawa was capped 27 times and scored 4 goals for the Japanese national team between 1989 and 1995. His first international appearance came on January 20, 1989 in a friendly against Iran in Teheran. He was a member of the Japan squad who participated in the 1994 World Cup qualification. In the crucial last match, Hasegawa was substituted in the 59th minute by Masahiro Fukuda and watched from the bench a late Iraqi equaliser dashed Japan's hope to qualify for the finals in the US, the match that the Japanese fans now refer to as the "Agony of Doha" ().