To provide a cable joint including a joint piece which has an good sliding property and is hardly broken. The cable joint includes a joint case 10 and a joint piece 50. The joint piece 50 is provided with a locking part of a cable end and a cable lead-out groove 56. A joint case side main sliding surface 21a is formed flat, and a protrusion part 61 is provided on a joint piece side main sliding surface 60. The protrusion part protrudes toward the main sliding surfaces 60, 21a in a direction orthogonal to the main sliding surfaces. An apex part 61a of the protrusion part is located at a position corresponding to the cable lead-out groove 56 in the direction orthogonal to the main sliding surfaces.