MNK Olmissum is a professional futsal club based in Omiš, Croatia.

In the playoffs, they beat Vrgorac in the quarterfinals, Futsal Dinamo in the semifinals and in the finals after a penalty, the double and current champion, Novo Vrijeme Apel.

[5] In the same season, they played in the Croatian futsal cup finals, but were defeated by Uspinjača Gimka 1–5.

[6] In the 2020–21 season, Olmissum made its debut in the UEFA Futsal Champions League, and reached the round of 16 where it lost 1–2 to KPRF.

[8][9] In the same season, Olmissum won the first cup title with a victory over Vrgorac after 11 series of penalties.