Abstract: A wagon top conversion assembly includes a framework for extending over and mounting to the opposite sides of a child's wagon, a plurality of mounting brackets attachable to the opposite sides of the wagon for mounting the framework thereto, a flexible cover being mountable over the framework to extend downwardly therefrom with separable side portions and an end portion for attachment to the sides and end of the wagon and capable of being individually placed in rolled-up conditions to open the sides and end of the wagon, and fastening ties attached on the flexible cover for fastening the cover to the sides and end of the wagon and for retaining selected ones of the side portions and end portion of the cover in the rolled-up condition.