Frank S. Gile (September 15, 1847 – March 19, 1898) was a Union Navy sailor in the American Civil War and a recipient of the U.S. military's highest decoration, the Medal of Honor, for helping to free his grounded ship.

On November 16, 1863, Lehigh was in Charleston Harbor providing support for Union troops on shore when the ship ran aground on a sand bar and came under heavy fire from Fort Moultrie.

Several attempts were made to pass a hawser to another Union ironclad, the USS Nahant, but each time the cable snapped due to friction and hostile fire.

Two sailors involved in the earlier attempts to save Lehigh, Coxswain Thomas Irving and Gunner's Mate George W. Leland, also received the medal at the same time.

After several previous attempts had been made, Gile succeeded in passing in a small boat from the Lehigh to the Nahant with a line bent on a hawser.