A sliding bearing may include vertically-arranged half members obtained by halving a cylinder, wherein a narrow groove is provided circumferentially to both axial direction ends of a lower half member at a downstream side of a rotational direction. A peripheral section may be formed on a surface on an outer side of the narrow groove. The peripheral section may be formed to have a height from an outer peripheral surface of the half member that is shorter than a height of a contact surface from an outer peripheral surface of the half member. An inclined part that is inclined toward an inner peripheral side is provided to a downstream side end, of the narrow groove, and a coating layer is provided to an inner peripheral surface of the half member only part of an inner peripheral surface of the narrow groove including an inner peripheral surface of the inclined part.