Juan Carlos Muñiz Armenteros (born January 28, 1976) is a Cuban baseball outfielder.

Muñiz is originally from Cuba and started his professional baseball career in the Cuban National Series.

After the 2001 season, he traveled legally to Brazil but overstayed his visa while hoping to defect to the United States.

He was signed by the Florida Marlins after a tryout in 2003 but the club had to wait another two years for him to get an American visa.

This Cuban biographical article relating to baseball is a stub.