Falcon Dam (Spanish: Presa Falcón) is an earthen embankment dam on the Rio Grande between Starr County in the U.S. state of Texas and the city of Nueva Ciudad Guerrero in the Mexican state of Tamaulipas.

The dam was built for water conservation, irrigation, hydroelectric power generation, flood control, and recreational purposes and as an international border crossing between Zapata and Starr Counties and Tamaulipas.

By October 1954, the dam's hydroelectric power station began to produce electricity.

When the dam was completed, the town was moved to higher ground, and the Zapata Bridge now lies at the bottom of Falcon Lake.

Small amounts of dynamite discovered near the dam and a copy of a warning helped alert authorities.