A collapsible cart for paint sprayers including a pair of spaced apart legs, a pump support extending between the upper ends of the legs, a pair of feet, a handle extending above the pump support, and lock and release means connected to the handle, pump support and legs and operable for releasably locking the pump support and handle in a first position wherein the pump support positions the pump for operation and the handle is positioned to enable moving the cart assembly and wherein the lock and release means is further operable for releasably locking the pump support and handle in a second position wherein the cart assembly is collapsed and further wherein each foot is pivotable respect to the leg to which it is attached between a first position generally perpendicular to a lower frame member, and a second position generally adjacent to the lower frame member.