Adin Vrabac started his career with OKK Spars Sarajevo in the Bosnian League.

[2] On 26 June 2014, Vrabac signed a four-year contract with German club TBB Trier.

[3] On 14 March 2015, Vrabac was the most efficient player in his team with Vitalis Chikoko against Alba Berlin in Mercedes-Benz Arena, he scored 18 points and had 3 rebounds.

[7] On 5 January 2018, he signed with German ProA club Hamburg Towers for the rest of the 2017–18 season.

[12] Vrabac has also been a member of the senior men's Bosnia and Herzegovina national basketball team.