A least-squares mixed finite element method was formulated for a class of S
tokes equations in two dimensional domains. The steady state and the time-d
ependent Stokes' equations were considered. For the stationary equation, op
timal H-t and L-2-error estimates are derived under the standard regularity
assumption on the finite element partition ( the LBB-condition is not requ
ired). Far the evolutionary equation, optimal L-2 estimates are derived und
er the conventional Raviart-Thomas spaces.