An apparatus for reducing a clutch pedal effort for a vehicle may include a pedal arm lever provided at an upper portion of a pedal arm and protruding forward, a torsion lever, one end of which is installed to be rotatable with respect to a pedal member and positioned at a front side of the pedal arm lever, and a back force link that is rotatably installed in the pedal member between the pedal arm lever and the torsion lever so that one end is connected to the pedal arm lever and the other end contacts the torsion lever, and that decreases the effort by generating turnover force when the pedal arm rotates forward and increases return force when the pedal arm rotates backward.