Abstract: The Hacksaw with support arm includes a frame having an elongated top portion extending along an axis generally from the front to the back of the frame, a front leg extending from said the axis and a back leg extending from the axis, the legs having means for supporting a blade from distal ends thereof. A support arm slidingly engages the elongated top portion. The support arm is extensible rearwardly of the back leg in the direction of the axis. The support arm includes an arm support for resting against a user's forearm during use.