Anguillavus (Latin for "eel ancestor") is an extinct genus of basal marine eel that lived during the Late Cretaceous (upper Cenomanian) of Lebanon, where it is known from the Sannine Formation.

As with modern eels, it lacked scales, but appears to have had a row of enlarged plates along its sides.

hackberryensis was reexamined, and found to not group with the rest of the genus, but rather be a dercetid aulopiform fish.

However, later studies have firmly refuted this, and have consistently recovered Anguillavus as a stem-eel.

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