The Communist Party of Slovakia (, KSS) is a communist party in Slovakia. It was formed in 1992 through the merger of the Communist Party of Slovakia â 91 and the Communist League of Slovakia.
The party is observer of the Party of the European Left although it criticizes the Political Theses for the 1st Congress of European Left. For the 2019 European Parliament election the KSS formed a unity list together with VZDOR â strana práce. The list was called Socialistický Front. It received 0.62% of the votes.