Pass Cavallo, alternately known as Cavallo Pass, is one of five natural water inlets which separate the Gulf of Mexico and Matagorda Bay, in the U.S. state of Texas.

[1] Matagorda Island Lighthouse was originally built on this site.

[2] During the Civil War, Pass Cavallo was a major port of entry and was captured by the Union.

[3] In 1684, René-Robert Cavelier, Sieur de La Salle came ashore on the Texas Gulf Coast at this point establishing the first French colony.

[4] In 1686, La Salle's illustrious barque ― La Belle ― navigated the barrier island waterway of the Pass Cavallo.