Abstract: A collapsible lobster trap having an external and internal design very similar to existing, non-collapsible traps, which allows a user to transport by truck, boat, or other means, a larger number of traps per excursion than is currently possible. The trap has a rectangular bottom panel to which a first pair of opposed side panels and a second pair of opposed side panels are hingedly attached. A top panel is hingedly attached to one of the side panels and is secured in the closed position by two retaining straps. In a preferred embodiment of the invention, each panel of one pair of opposed side panels is designed with ends overlapping the ends of the other pair of opposed side panels so that the vertical corners of the trap are structurally reinforced while maintaining collapsibility.