In　this　study,　the　design　of　the　optimal　decentralised　state-feedback　controllers　is　considered　for　a　wireless　sensor　and　actuator　network　(WSAN)　with　stochastic　network-induced　delays　and　packet　losses.　In　particular,　taking　advantage　of　multiple　controllers,　the　authors　model　the　WSAN　as　a　wireless　networked　control　system　with　decentralised　controllers,　and　then　formulate　the　stochastic　optimal　state-feedback　control　problem　as　a　non-cooperative　linear　quadratic　game.　The　optimal　control　law　of　each　controller　is　obtained　that　is　a　function　of　the　current　plant　state　and　past　control　signals.　The　performance　of　the　proposed　algorithm　is　investigated　by　an　unstable　linearised　inverted　pendulum　and　an　application　of　the　load　frequency　control　system　in　power　grid.