Croatia participated in the Junior Eurovision Song Contest 2003.

The Croatian broadcaster Hrvatska radiotelevizija (HRT) organised an national final to select the first Croatian entry, being Dino Jelusić with the song "Ti si moja prva ljubav", which went on to win the 2003 contest.

An expert committee consisting of Alan Bjelinski, Rajko Dujmić, Boris Đurđević, Mladen Kušec, Marin Margitić, Ivana Plechinger and Maja Vučić selected ten artists and songs for the competition from the received submissions.

[1] The final took place on 7 July 2003 at the Tvornica Kulture in Zagreb, hosted by Iva Šulentić and Frano Domitrović, while all the competing songs were accompanied by a symphony orchestra.

[1][2] During the running order draw which both took place on 6 October 2003, Croatia was drawn to perform second, following Greece and preceding Cyprus.