Langstonia (meaning "Langston's crocodile," in honor of paleontologist Wann Langston, Jr.) is an extinct genus of sebecid mesoeucrocodylian. Its fossils have been found in middle Miocene-age rocks from Colombia, in the "Monkey Beds" of the Villavieja Formation. Langstonia was named in 2007 by Alfredo Paolillo and Omar Linares for fossils originally described by Langston in 1965 as Sebecus huilensis. Thus, the type species is L. huilensis.