Fallout 3 keys

General information
Keys in Fallout 3 open specific doors or containers, some of which are inaccessible otherwise. Some keys can be found in the game world, some are in the possession of non-player characters and can be pickpocketed while a few can only be retrieved if their owner has been killed.

Legend
{{Legend }}
 * symbol1 =
 * desc1   =Only found if the NPC in question is dead.
 * symbol2 =
 * desc2   =Received through dialogue or as part of a quest; not in the NPC's normal or death inventory.
 * symbol3 =
 * desc3   =In the NPC's inventory but can also be received through dialogue or as part of a quest.
 * symbol4 =
 * desc4   =Name is spelled as it is in-game, even if the in-game spelling is grammatically or otherwise wrong.

Operation: Anchorage
No keys are added by Operation: Anchorage.

Mothership Zeta
No keys are added in Mothership Zeta.

Keycards

 * Fort Constantine CO keycard, a cut keycard intended to be used in Fort Constantine.
 * Pass card, Red and Blue key cards that can be used in place of Metro tickets with security Protectrons in the Washington, D.C. Metro.