Warrant Officer, a rank, may refer to:
- Warrant Officer (Garbage) – The squad leader of a Duty squad stationed in the Garbage to defend the Rostok factory entrance in S.T.A.L.K.E.R.: Shadow of Chernobyl.
- Warrant Officer (Rostok) – An officer who patrols the Rostok factory complex and later Sakharov's lab in S.T.A.L.K.E.R.: Shadow of Chernobyl.
- Warrant Officer Umerov - One of the deceased members of the Stingray 3 crew in S.T.A.L.K.E.R.: Call of Pripyat.
- Warrant Officer Valentyr - A member of Captain Tarasov's squad and one of the few Operation Fairway survivors in S.T.A.L.K.E.R.: Call of Pripyat.