This paper describes the robust output feedback ∞H fuzzy control design for a class of nonlinear stochastic systems. The system dynamic is modelled by Itoˆ −type stochastic differential equations. For general nonlinear stochastic systems, the ∞H ontrol can be obtained by solving a second-order nonlinear Hamilton-Jacobi inequality. In general, it is difficult to solve the second-order nonlinear Hamilton-Jacobi inequality. In this paper, using fuzzy approach (T-S fuzzy model), the ∞H fuzzy control design for the nonlinear stochastic systems can be given via solving linear matrix inequalities (LMIs) instead of a second-order Hamilton-Jacobi inequality. Simulation example is provided to illustrate the design procedure and expected performance.