Abstract: This paper deals with the problem of decentralized robust H∞ control for a class of interconnected uncertain dynamic systems with state delays. The parameter uncertainties are unknown but norm-bounded. A sufficient condition is obtained for each subsystem and overall system to be stabilizable and satisfy the given H∞ performance via linear memoryless state feedback decentralized controllers. The re- suits depend on the size of the delays and are given in terms of linear matrix inequalities.