A foil bearing includes: a tubular foil holder (31); and a plurality of foils (32) having a radial bearing surface (S1) and being arrayed on an inner peripheral surface (31a) of the foil holder (31) in a circumferential direction. Both circumferential ends (projecting portions (32e) and projecting portion (32c)) of each of the foils (32) are held on the foil holder (31). The foil bearing is configured to support a shaft (6) inserted along an inner periphery thereof in a freely rotatable manner. The plurality of foils (32) are held on the foil holder (31) under a circumferentially movable state.