A handle adaptor for transport carts includes a block-shaped lower member with first, second, third and fourth upper surfaces with inner edges. The inner edges are disposed below the inner edges of the first and second upper surfaces. A fifth upper surface is formed the inner edges and coextensively shaped posts are monolithically formed with the outside faces of the lower member. The posts have apertures formed in distal ends. A block-shaped upper member has lower surfaces with a passageway surrounding the proximal ends of the handles of the transport. The upper member further includes a curved flange with a groove that receives and captures the U-shaped extension. The upper and lower members have passageways. A support plate includes a bracket with threaded shafts and a centrally registered slot. A cover has threaded aperture and a centrally registered slot. The adjustably pivoting mechanism includes a plurality of cotter pins.