A parking brake apparatus includes a base plate, a brake lever supported by the base plate, a pair of left and right brake actuating units, and left and right brake cables connecting between the brake lever and the left and right brake actuating units, respectively. The base plate has an elongated hole extended from a corresponding position to a cable connecting portion of the brake lever toward the outer cable holding portion, left and right inner cables of the pair of left and right brake cables are connected to a common inner cable by an equalizer, and the common inner cable is extended inside the elongated hole from the cable connecting portion toward the outer cable holding portion.