Left Bloc

Left Bloc may refer to:


 * Left Bloc (Portugal), a political party in Portugal
 * Left Bloc (Croatia), a political alliance in Croatia
 * Left Bloc (Hungary), a political alliance in the Second Hungarian Republic
 * Left Bloc (Luxembourg), a former political alliance in Luxembourg (1908–1912)
 * Left Bloc (Palestine), a political organisation in Mandatory Palestine
 * Left Bloc (Russia), a political alliance in Russia