The Oxford Branch was a branch line railway that formed part of New Zealand's national rail network. It was located in the Canterbury region of the South Island, and ran roughly parallel with the Eyreton Branch that was located some ten kilometres south. It opened to Oxford in 1875 and survived until 1959. It was unusual in that for much of its life it linked two main lines, the Main North Line and the Midland Line, the only portion of the proposed Canterbury Interior Main Line to be completed.