Janković has successfully performed for the younger representative categories. At the Under-18 European Championships he won two medals - a silver in Poland 2011 and bronze in &lt;a href="2012%20FIBA%20Europe%20Under-18%20Championship"&gt;Lithuania/Latvia 2012&lt;/a&gt;. In 2013 he was part of the team that came up to silver medal at the Under-19 World Championship. In 2014 he won another bronze medal - this time with the youth team at the Under-20 European Championship. He was named in the All-Tournament ideal five, averaging 15.5 points and 9.1 rebounds per game.