Abstract: A foldable golf-bag transporting golf-bag/golf-cart assembly shaped to accommodate golf-bag with protruding storage compartments, providing for secure, reversible mounting of bag onto cart allowing bag to maintain a stable, vertical position when cart at rest, without need for straps or biasing members; having first and second mounting members shaped to reversibly mate in sliding dovetail manner attached to upper regions of bag and cart and having third and fourth mounting members shaped to reversibly mate with each other attached to lower regions of bag and cart. Mounting members available as retrofit members. Cart includes foldable handle and foldable platform attached to lower end of cart that when opened to horizontal position supports bag in vertical position. Cart's wheel axle may be telescoped outwardly providing stability while assembly in motion or in vertical rest position, or may be retracted inwardly to provide for transport through narrow passageways.