A radial foil bearing of the present disclosure includes a bearing housing that has an insertion hole into which a rotary shaft is inserted, a base sheet that is disposed in the insertion hole, a back foil that is supported by the base sheet and has unevenness in a radial direction of the insertion hole, and a top foil that is supported by the back foil. The base sheet has a branch deviated in the radial direction of the insertion hole, and is engaged with at least one of the bearing housing, the back foil, and the top foil.