Ultras Mostar is HŠK Zrinjski Mostar supporters' group in Bosnia and Herzegovina[1] Officially, the Ultras-Zrinjski Fan Club was founded in March 1994, when the Citizens' Associations Act entered into the Registry of Citizens' Associations in the Herzegovina-Neretva Canton, and exist as an unregistered supporter group.

At the beginning of 1992, the work of HŠK Zrinjski Mostar was restored in Međugorje, and with its renewal, support in the town of Neretva slowly arises and is organized.

In 1997, in the Croatian Lodge "Herceg Stjepan Kosača", the first Assembly of the Fan Club was held in Mostar, where more than 400 members of this support group gathered.

After that meeting, one of the ultras podium groups was a fan club named Zrinjevci, which was common in all games played by Zrinjski.

During this period there are numerous guest appearances throughout Herzegovina, and go to Busovača, Kiseljak, Vitez, Prozor-Rama, Orašje and other cities where the First League of Herzeg-Bosnia was played.