An accordion sign assembly includes a sign holder and an accordion sign. The sign holder has an elongate shape and an upper surface. The accordion sign includes a plurality of sections for displaying indicia, the sections defining a top edge, a bottom edge, and being interconnected at a plurality of pleats. The accordion sign also includes a plurality of tabs connected to the bottom edge of the plurality of sections at a plurality of fold lines that are substantially orthogonal to the plurality of sections. The plurality of tabs are folded relative to the plurality of sections to extend substantially orthogonally from the plurality of sections. A plurality of fasteners secures the plurality of tabs to the sign holder.