Stationary shoulder friction stir welding (SSFSW) involves a non-rotating tool shoulder while rotating probe to form the weld joint. 1 As a result, a narrow stir zone, a non-existent heat affected zone and a good surface finish are unique advantages of SSFSW. 1 An examination of the evolution of residual stresses in SSFSW especially in joints of high strength aluminum alloys is of interest in the present study. SSFSW of four different types of aluminum alloys-AA2219-T6, AA6061-T6, AA7010-T6 and AA7050-T6–are examined and reported. An indigenously developed finite element method based software JWRIAN© is utilized here for the thermo-mechanical modeling of SSFSW process.