The paper observes a place and role of Central European (Polish and Czech) ethnical and geographical space in Croatian Slavism in 16 - 18 centure The paper is based on detail analysis of the works of key Croatian political thinkers, speech On the Origin and History of Slavs of Vinko Priboevich,large historical work Il Regno de gli Slavi (The Realm of the Slavs, 1601) Yuriy Krizhanich