A line roller for guiding fishing line to a spool of a spinning reel for fishing, includes a cylindrical guide member having a guide surface to guide the fishing line on an outer periphery of the spool, a bearing rotatably supporting an inner circumferential surface of the guide member, a support member supporting an inner circumferential surface of the bearing in a radial direction, a collar abutting an axial side surface of the bearing and fixing the axial position thereof, a waterproof member interposed between the collar and the support member at a contacting surface over the circumference around an axis of rotation of the guide member, and a groove disposed in the collar or the support member at the contacting surface over the entire circumference around the axis of rotation, and the waterproof member being disposed in the groove.
