 He made four appearances for Scotland during 1967–68 (whilst with Sheffield Wednesday) and a further appearance (against Portugal) in April 1971 (when with Wolverhampton Wanderers).On his Scotland debut he scored the third goal in Scotland's 3–2 win over 1966 FIFA World Cup winners England at Wembley.Speaking in 2014, Scotland manager Bobby Brown said that McCalliog had been the "crux" of the team.