Ansah has represented England at both Under-16 and Under-17 level. In 2012, at the age of 18, Ansah was called up to the Ghana under-20 side for the first time but both Ansah and his father Andy blasted the Ghana Football Association stating that they had not been notified of the call-up and had discovered it after a family friend had messaged to congratulate him. Ansah later committed his international future to Ghana and, the following year, he was called up to the provisional under-20 training squad to train with a view to being included in the squad for the 2013 FIFA U-20 World Cup but was later omitted from the final squad.