This considers the problem of H ∞ controller design for singular stochastic systems. The systems have Markovian jump and time-varying delay. We aim to design a controller ensuring the closed-loop system is stochastically admissible and satisfies a prescribed H ∞ performance index γ . Based on the linear matrix inequalities (LMIS) techniques, the mode-dependent singular matrices E (r t ) and the stochastic Lyapunov function method, a sufficient condition for the desired H ∞ controller for the system under consideration is given in terms of LMIs. Moreover, to clarify the proposed results, some illustrative examples are presented.INDEX TERMS Singular stochastic system, linear matrix inequality, H ∞ control, time-varying delays, Lyapunov-Krasovskii functional.