In this chapter, event-triggered SMC for nonlinear systems is presented. Similar design approaches are used for nonlinear system like LTI systems in the earlier chapter. As a preliminary, first SMC is designed for continuous-time system that yields stable sliding motion. Then, this control is used in designing the event-triggered SMC for nonlinear systems. A sufficient condition for the stability and existence of practical sliding mode are also given. In practical applications, delays in control implementation are unavoidable that may the affect system performance. The event-triggering strategy is also developed by considering such delays into account. © Springer International Publishing AG, part of Springer Nature 2018.