Abstract: A modular trailer may include a floor component, two side wall components, a front wall component, a rear wall component, a rear door component, and a roof component. At least some of the components may be interchangeable, such that they are attached to one another via fasteners that allow any one of the interchangeable components to be removed from the modular trailer without disassembling the modular trailer. A method of manufacturing the modular trailer may include assembling the components but not completely assembling the trailer, so that the trailer can be shipped in a more efficient, cost effective, unassembled form.