A collapsible seat includes a seat bottom, a back support, and armrests, all interconnected for movement between an operative, or set-up, condition and a collapsed, or bundled, condition. The seat bottom comprises first and second portions interconnected together and foldable into generally parallel relationship with one another associated with the collapsed condition of the seat. The back support is pivotally disposed relative to the seat bottom such that, in the seat's set-up condition, the back support extends generally upwardly from a rear portion of the seat bottom and is capable of pivotal movement relative to the seat bottom for collapsing the seat to its collapsed condition. The armrests are located on the outer edges of the seat bottom when the seat is in its set-up condition, and are pivotally connected with the first and second seat bottom portions, respectively, for movement relative thereto during set-up and collapsing of the seat.