It is an object of the present invention to provide a sliding bearing which has a simple construction and thus can be produced easily and at a low cost and yet eliminates the need for the use of a heat insulation sleeve and the like and is capable of maintaining a frictional torque to a low extent. A sliding bearing (1) has an inner ring (2), an outer ring (3), and a sliding contact member (4) interposed therebetween. The inner ring (2) has a curved surface (2a) formed along an outer circumference thereof and a shaft-receiving hole which fits on a supporting shaft along an inner circumference thereof. The sliding contact member (4) is a molded body, made of resin composition, which has a curved surface (4a) making sliding contact with the curved outer circumferential surface (2a) of the inner ring (2) with the curved surface (4a) being opposed to the curved outer circumferential surface (2a). The outer ring (3) does not contact the inner ring (2) and holds the sliding contact member (4) on an inner circumferential side thereof with the outer ring (3) covering the sliding contact member (4). The outer ring (3) has an open portion (3d) formed on an axial one end surface thereof and a pawl portion (3a) formed at an edge of the open portion (3d). The sliding contact member (4) is combined with the outer ring (3) by inserting the sliding contact member (4) into the outer ring (3) from the open portion (3d) thereof and fixed by the pawl portion (3a).