Narrator

The narrator in Fallout, Fallout 2, Fallout 3, Fallout: New Vegas and Fallout Tactics is Ron Perlman, quite a well known Hollywood actor. He narrated the game intro and the endings for various towns in the games. He did not voice Fallout: Brotherhood of Steel, where Tony Jay (the Lieutenant from Fallout) narrated the intro instead.

Perlman also voiced Butch Harris in Fallout.

Fallout

 * Intro
 * Endings
 * Death messages

Fallout 2

 * Intro
 * Endings
 * Death messages

Fallout Tactics

 * Intro
 * Chapter endings
 * Game endings

Van Buren

 * Endings

Fallout 3

 * Intro
 * Endings

Fallout: New Vegas

 * Intro
 * In the game files there's an NPC called Ron The Narrator and it's placed somewhere in the game. He wears legion centurion armor and has an eye patch.