A caulk storage system for storing an opened calk container includes a calk container that has a tube and a spout. The calk container may contain a fluid calk. A pair of cylinders is provided. The cylinders are matable to each other to define a closed tube. The calk container is positioned in each of the cylinders when the cylinders are mated together. Thus, the pair of cylinders inhibits the fluid calk from drying thereby facilitating the calk container to be stored when the calk container is opened.