Pikk has represented Estonia at under-17, under-18, under-19 and under-21 levels.
He was named in the Estonia under-19 squad for the 2012 UEFA European Under-19 Championship in Estonia.
Pikk played in every group stage match, but failed to help the team progress to the semi-finals as Estonia lost all three games against Portugal, Greece and Spain.

Pikk made his senior international debut for Estonia on 7 June 2014, in a 2–1 home win over Tajikistan in a friendly.
He made his first start for Estonia on 12 October 2014, in a UEFA Euro 2016 qualifying match against England while performing his compulsory military service in the Estonian Defence Forces.
The match ended in a 0–1 loss.
Pikk scored his first international goal on 11 November 2015, in a 3–0 home win over Georgia in a friendly.
Pikk has represented Estonia at under-17, under-18, under-19 and under-21 levels. He was named in the Estonia under-19 squad for the 2012 UEFA European Under-19 Championship in Estonia. Pikk played in every group stage match, but failed to help the team progress to the semi-finals as Estonia lost all three games against Portugal, Greece and Spain.
Pikk made his senior international debut for Estonia on 7 June 2014, in a 2–1 home win over Tajikistan in a friendly. He made his first start for Estonia on 12 October 2014, in a UEFA Euro 2016 qualifying match against England while performing his compulsory military service in the Estonian Defence Forces. The match ended in a 0–1 loss. Pikk scored his first international goal on 11 November 2015, in a 3–0 home win over Georgia in a friendly.
Artur Pikk