Ostrava Chess z.s. is a Czech chess organizer based in Ostrava (Polanka nad Odrou), Czech Republic. Over the years, the association has become a recognized tournament organizer in the Moravian-Silesian Region. As a result, it is closely linked with major chess events in and around Ostrava.

In addition, the team runs the Ostravský koník festival, a long-running chess festival that attracts players from the Czech Republic and abroad. The program typically includes multiple FIDE-rated tournament sections and side events for different levels. Moreover, it supports both ambitious competitors and improving club players through a clear section structure.

Furthermore, Ostrava Chess z.s. also delivers regional events such as the K-TRIO Open as part of its rapid tour activities. For example, these events focus on rapid chess and often complement the festival’s classical chess schedule. Consequently, the organizer offers a balanced calendar that includes blitz chess and community-driven chess in Ostrava.