Abstract: A portable hoist consisting essentially of three major components readily assembled and disassembled at the job site in a relatively short period of time to facilitate portability. The three basic components include a generally horizontally disposed main frame, an elongated upright mounted at one end of the main frame and a generally horizontally extending boom at the upper end of the upright with the boom and main frame extending from opposite sides of the upright and from the upper and lower ends respectively. The main frame includes structure enabling it to be supported by wheeled units, structure to enable an end portion of the frame remote from the upright to be anchored to a supporting deck or platform such as a truck or similar vehicle, a building floor or other support and an area receiving a counterweight at a point remote from the upright.