An air cleaner for a fuel cell vehicle includes: a case having an inlet and an outlet; and a filter element fixed to the case, the filter element being configured to section the case into an inlet side and an outlet side and filter air flowing from the inlet side to the outlet side. A locking projection projecting toward the inside of the case is provided on the inlet side in the case. A first prefilter, a second prefilter, and a chemical filter are sandwiched between the locking projection and the filter element in the order of the first prefilter, the chemical filter, and the second prefilter from the upstream side as the inlet side of the filter element inside the case toward the downstream side as the outlet side of the filter element inside the case.