The Party of Liberation and Socialism (Arabic: حزب التحرر والاشتراكية, French: Parti de la libération et du socialisme, abbreviated PLS) was a communist political party in Morocco 1968-1974. Ali Yata was the general secretary of the party.
The foundation of PLS was announced by Ali Yata on January 26, 1968. PLS was founded as a successor of the Moroccan Communist Party (PCM). PLS advocated establishing socialism adapted to Moroccan national conditions, and called for the unify patriotic forces in a 'United Popular Front' with anti-imperialist and anti-bourgeois characteristics.
The party was banned by the Moroccan government in 1969. Ali Yata was jailed.
PLS dissidents founded the Ila al-Amam group in 1970.
In 1974 the Party of Progress and Socialism (PPS) was founded as a successor of PLS.