Abstract: Ladder leveler apparatus includes a frame portion, a support portion, an affixing portion, an aligning portion and a positioning portion. The frame portion includes an elongated U-shaped section, the U-shaped section including a main section having a width slightly larger than the width of a ladder leg. Transverse side sections extend from the main section adjacent side edges thereof along substantially the entire length of the main section, the side sections having a width at least about equal to the thickness of the ladder leg. The main section includes at least one longitudinal channel section. The support portion includes a foot member extending from one end of the frame portion, the foot member being pivotally connected to the ladder leg. The foot member includes a connector section and a base section disposed on a free end of the connector section remote from the ladder leg.