An adjustable deer stand support system for that supports various types of deer stands having different widths. The adjustable deer stand support system generally includes a stand support arm having a support member and a first pair of adjustable support units adjustably positioned upon the support member. Each of the first pair of adjustable support units includes a sliding bracket that adjustably connects to the support member, an extended member that extends upwardly from the sliding bracket and an engaging member to secure the sliding bracket in a desired longitudinal position along the support member. The extended member is adapted to extend into a lower opening of a lower leg within a deer stand.
