Monica (disambiguation)

;Characters
* Monica Kendall, a deceased denizen of Vault 101, mentioned in Fallout 3.
* "Saint Monica", a character of the cult of Saint Monica who is worshiped as the patron Saint of lost children, in Fallout 3.
* Monica Rose, an actress that resided in Vault 51, mentioned in the Fallout 76 Nuclear Winter update.
;Other
* Saint Monica's Church, the local cult and church of Rivet City, derived from Christianity, in Fallout 3.
* Saint Monica's key, a pair of keys, in Fallout 3.
* Monica Helland, a developer who worked at Fantasy Flight Games on Fallout: The Board Game.
* Monica Vallejo, a developer who worked at Interplay Entertainment on Fallout Tactics: Brotherhood of Steel.