A folding wagon has a folding frame with a stowed and open position. The folding frame has a pair of front vertical supports, and a pair of rear vertical supports. A lower front horizontal support connects between the pair of front vertical supports, and a lower rear horizontal support connects between the pair of rear vertical supports. An upper front horizontal support connects between the pair of front vertical supports, and an upper rear horizontal support connects between the pair of rear vertical supports. The folding frame has supplemental links that form a frame for seats including a front seat bar extending between a pair of front seat vertical members and including a rear seat bar extending between a pair of rear seat vertical members. Sidewall members have a pair of horizontal supports pivotally connected to the front vertical supports and the rear vertical supports.