The men have been identified as Felipe Ramon Pino, Osmel Aguilera, Juan Junior Padron, and Rafael Jorrin.
They are not among a group of 10 nonviolent dissidents remaining in Cuban jails from a 2003 crackdown on dissent. The release was announced Friday by church spokesman Orlando Marquez.
Little is known about Pino. Aguilera was serving a 30-year sentence for sabotage, and Jorrin and Padron were in jail for hijacking and other charges. Cuba is clearing its jails of many opposition figures.