United States Naval Communications Station Sidi Yahya El Gharb was a Naval base of communication station of facilities, supply, and rest and recreation of the United States Navy located in Sidi Yahya El Gharb, Morocco. It was a U.S. Navy installation following to Naval Air Station Port Lyautey in Kenitra, Morocco. It was closed in 1975. Following its closure in 1977, it was transformed into a military barracks serving Sidi Slimane Air Base by the Royal Moroccan Air Force.