USS Falcon was a gunboat in the United States Navy.

Falcon was captured as the Mexican gunboat Isabel on November 14, 1846 at Tampico, and taken into the Navy.

A force of over 10,000 troops was landed to attack the city and its guardian castle of San Juan de Ulúa, and while the squadron fired upon the seaward fortifications, a naval battery of six heavy guns was landed to aid the troops.

Falcon served on guard and patrol duty off the Mexican coast, and in April 1848 voyaged to New Orleans for supplies.

She sailed from Campeche on July 18 for New York, where she arrived on August 27 and was decommissioned on September 4.