CLAMP AND WIRE HARNESS

A clamp and wire harness that allow for position adjustment with respect to an object of installation; wherein the clamp holds a tubular member accommodating an electric wire and is fixed to an object of installation. The clamp includes a clamp body, which holds the tubular member, and a core block, which is separate from the clamp body. The clamp body includes a through-hole, which accommodates the core block, inner surfaces opposed to the core block in the through-hole, and a bottom surface. The core block includes a body portion accommodated in the through-hole, a coupling portion to be coupled to the object of installation, and a protrusion that protrudes in a direction orthogonal to a central axis O of the through-hole. The protrusion is opposed to the bottom surface. The body portion is configured to be separated from one of the inner surfaces when contacting the other inner surface.