Harold (disambiguation)


 * Characters:
 * Harold, an FEV mutant (eventually consumed and symbiotically fused with a tree) who has appeared in Fallout, Fallout 2, Fallout 3 and Fallout: Brotherhood of Steel.
 * HAROLD.MSG, dialogue for Harold in Fallout.
 * Church of Harold, a cult formed around the worship of Harold in Project V13 and The Armageddon Rag, Vol. 2.
 * Harold Worthington III, a visitor of the Statesman Hotel mentioned in Fallout 3.
 * Harold Callahan, a US Army trooper in the Pentagon before the Great War, mentioned in the Fallout 3 add-on, Broken Steel.
 * Harold, a ghoul recruit and member of the Brotherhood of Steel in ''Fallout: Tactics.
 * Real life person:
 * Harold Kim, a developer who worked at Interplay Entertainment as Quality Assurance Project Supervisor for Fallout Tactics.