A portable outdoor supply assembly for providing an all-in-one outdoor supply kit includes a cooler body having a cooler front side, a cooler back side, a cooler left side, a cooler right side, a cooler bottom side, and an open cooler top side defining a cooler inside. A cooler lid is coupled to the cooler body. The cooler lid is hingingly coupled to the cooler back side adjacent the cooler top side to cover and alternatively uncover the cooler top side. Each of a plurality of kit containers has a zipper closure to seal and alternatively unseal a kit inside. The plurality of kit containers is dimensioned to fill the cooler inside. The plurality of kit containers includes a plurality of outdoor items.