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Modal interaction in coupled systems is of immense interest due to its promising potential to enhance performance of resonators [1] and oscillators [2]. We investigate the effect of intermodal coupling through internal resonance on the dynamics of MoS2 resonator. The scanning electron micrograph of MoS2 resonator is shown in Figure 1. Vibrational modes of two-dimensional resonators are inherently coupled through the tension in the membrane [3]. The coupling and energy exchange between the modes is further enhanced when the vibrational modes are commensurate leading to internal resonance [3]. We observe peak splitting a signature of energy exchange through internal resonance in MoS2 resonators. Peak splitting is observed even when the device is not strongly driven into the nonlinear regime. We further model our device response as a coupled system using numerical integration scheme. The …