Abstract: A portable seat assembly (10) includes a seat member (16) and a back member (18). The seat member has a forward hook portion (36), and the back member has a rearward hook portion (70). The rearward hook portion includes two spaced L-shaped arms (71,71), connected by a cross-bar (74) which functions as a carrying handle. The back member may be folded to lie adjacent the seat member for ease in carrying, or may be moved to an upright position at which a plank-like support (11) will be captured between the forward and rearward hook portions. In its operative position, the back member provides support for a person sitting thereon.