PROBLEM TO BE SOLVED: To provide a guide ring that can prevent pressure force applied from an inner circumferential surface of the guide ring to a fishing line in the vertical direction of the inner circumferential surface, even when the guide ring is provided to a rod body at a slant.SOLUTION: A guide ring 12 has an outer circumferential surface 12a coming in contact with a guide body and an inner circumferential surface 12b being more radially inside than the outer circumferential surface 12a. In a cross-sectional view of a cut surface including the axis line of the guide ring 12, the inner circumferential surface 12b has a first curved surface 12b1 having a first curvature radius R1, a second curved surface 12b2 being adjacent in the outside of the direction of the axis line in the first curved surface and having a second curvature radius R2, and a third curved surface 12b3 extending from one end of the second curved surface to the outer circumferential surface and a third curvature radius R3. It is configured such that the first curvature radius R1 may become larger than the second curvature radius R2 and the second curvature radius R2 may become larger than the third curvature radius R3.SELECTED DRAWING: Figure 5COPYRIGHT: (C)2018,JPO&INPIT