Nonlinear creep under combinations of constant tensile and torsional stresses and recovery are reported for various constant temperatures ranging from 75 to 145°F. Results of the creep tests were describable by a power function of time whose exponent is independent of stress and temperature. These results, in conjunction with previous results from pure tension and pure torsion creep experiments on polyurethane, permitted using the multiple‐integral representation to describe the creep and recovery behavior of this material under different combinations of constant tensile stress, torsional stress, and temperature. Agreement with the creep‐test data is good, and prediction of creep under other states of stress and recovery is satisfactory. Most of the nonlinearity was found in the coefficient of the time‐dependent term.