An automobile cable socket. The automobile cable socket including a first socket member that is disposed to surround the first cable and includes a plurality of sawtooth portions formed on an external surface thereof in a direction in which the first cable extends, a second socket member coupled to the first socket member and including an engaging portion, a spring installed outside of the second socket member, and a position fix member that is disposed between the second socket member and the spring, releases engagement between the engaging portion of the second socket member and the plurality of sawtooth portions of the first socket member by pressing the spring, and engages the plurality of sawtooth portions with the engaging portion when the spring is restored to an original position.