We generalize the standard product integral formalism to incorporate Grassm
ann valued matrices and show that the resulting supersymmetric product inte
grals provide a natural framework for describing supersymmetric Wilson line
s and Wilson loops. We use this formalism to establish the supersymmetric v
ersion of the non-Abelian Stokes' theorem. (C) 2000 Elsevier Science B.V. A
ll rights reserved.