A computer mouse having a separately movable hand rest. The mouse comprises a housing having a conically shaped depression within a top wall of the housing tapering to an aperture through the top wall. A connecting pin extends through the aperture with an interior end secured within the mouse housing. A hand rest providing support to the heel and palm of the hand is orbitally connected to the connecting pin by an aperture through the hand rest located within a concave portion sized to fit within the depression of the mouse housing. The hand rest has an arcuate shaped bottom portion and a base end moving about the mouse housing during use to maintain alignment of the hand rest with the hand. The housing moves free of interference from the hand rest adjacent the arcuate shaped bottom portion. A tensioning means tensions movement of the hand rest about the housing.