Transcranial magnetic stimulation (TMS) is an emerging neuroscience technique that can be used to probe in vivo brain function. When applied repeatedly, TMS also has therapeutic applications in a number of psychiatric and neurological conditions, most notably depression. In recent years a number of research groups have begun to use TMS in autism spectrum disorder (ASD). This has included studies of neuroplasticity, neurochemical systems, and cortical excitability, but also the interventional use of repetitive TMS (rTMS) in an attempt to elicit a therapeutic response. In 2013, an international group of leading ASD and brain stimulation researchers formed a consensus group for TMS in ASD, and are currently working toward a coordinated approach for advancing basic and clinical science in this area. This panel will provide an overview from four different labs that conduct TMS research in ASD, and will feature both investigative and therapeutic studies.