The Communist League of Slovakia (Slovak: Zväz komunistov Slovenska, ZKS) was as a communist party in Slovakia.
It was formed in 1991 by orthodox elements of the original Communist Party of Slovakia (KSS), which opposed the mutation of KSS into the Party of the Democratic Left. In 1992 ZKS and KSS '91 merged to form the new Communist Party of Slovakia.
References
Communist League of Slovakia Wikipedia(Text) CC BY-SA