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 Port Lyautey Air Base (Kenitra, Morocco). was closed in 1975. Following its closure in 1977, it was transformed into a military barracks serving the 5th Moroccan air military base of Sidi Slimane by the Royal Moroccan Air Force.