Sílvio Benedito Guimarães Navas, better known only as Sílvio Navas, was a Brazilian actor, voice actor and dubbing director.

Non-Anime Roles:
- Bud Spencer, Humphrey Bogart, Ernest Borgnine, Kirk Douglas, Walter Matthau, Charles Chaplin and Fred Astaire (Most of the productions)
- Mumm-Ra (1st voice; Thundercats)
- Darth Vader (1st dub; Star Wars franchise)
- Don Vito Corleone (2nd dub; The Godfather)
- Bender Rodríguez (2nd voice - 3rd to 4th season; Futurama)
- Fidget the Bat (The Great Mouse Detective)
- Papa Smurf, Vanity Smurf and Farmer Smurf (Smurfs 1981)
- Darkseid (The Super Powers Team: Galactic Guardians)
- Charles Phillip Ingalls (1st voice; Little House on the Prairie)
- J. Wellington Wimpy (Popeye 1980)