The life-size 4th century BC white marble bull's head, the star artefact among the works that were all looted in 1981, had been loaned to New York's Metropolitan Museum of Art (Met).
The five pieces were discovered on the Phoenician site of Eshmun, near the southern port city of Sidon, during excavations carried out in the 1960s and 1970s.
Lebanon's national museum reveals long-hidden treasures
"We are committed, as much as we can, to repatriating pieces stolen during the war," Lebanese Culture Minister Ghattas Khoury said during a ceremony at the National Museum of Beirut. Lebanon's civil war lasted 15 years from 1975 to 1990.
The five statues were stolen from a storeroom in Byblos and later surfaced "on the international antiquity market", the culture ministry said in a statement.
They were repatriated over the past two months. The bull's head had been exhibited at the Met and was spotted as part of a drive by Manhattan district attorney Cyrus Vance Jr.
The official has made it a priority to track stolen artwork and the repatriation of the Lebanese sculptures capped months of cooperation between Beirut and the US authorities.
The repatriated works unveiled on Friday also included a 6th century BC marble statue that had ended up in the same private collection as the bull's head.
The other pieces were a 4th century BC statue that had been in the possession of a private New York collector, a 5th century BC marble torso that turned up in Germany and a statue of a young boy which customs seized at the northern port of Tripoli.
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