Absolutely—there are a few models and categories I’d look at first. The key is to avoid benches that use glued wood joints or one-piece molded frames. Instead, choose fold-flat or knockdown designs with bolts, clips, or wing nuts.
One good option is the IKEA NÄMMARÖ bench. This modular acacia bench comes flat-packed and uses simple bolts. If you keep the hex key and hardware in a labeled bag, you can separate the seat, backrest, and legs in about ten minutes, and it stores almost flat against a garage wall. A quick tip: leave the armrests attached as one piece so reassembly stays fast.
Another solid choice is the Keter Solana 2-Seater Bench. It is made from resin, so it will not swell or crack in damp storage. Assembly is mostly tool-free with interlocking panels. Because it is lightweight, two people can move it easily. You can break it down into a few large panels or simply cover it if you have a sheltered spot.
If you want zero disassembly, the Lifetime fold-in-half bench is the easiest option. The metal-and-resin design folds flat in seconds and stands upright in the shed or garage. It does not have the warm look of wood, but it is maintenance-free and very stable.
Before buying, check that the hardware is corrosion-resistant, such as stainless steel or coated steel. Avoid models where the backrest is glued or doweled into the seat. For seasonal storage, make sure the bench is clean and dry before packing it away, label all bolts, and store cushions indoors. If you want a wood look but easier storage, choose a bench with a removable backrest and bolt-together legs rather than a fully assembled wooden frame.