Temporomandibular joint (TMJ) surgery has been dramatically updated by the advent of virtual surgical planning. However, current technology still fails to reliably simulate minimally invasive surgery. In open surgery, virtual surgical planning (VSP) and 3D printing can be used with success in condylectomies, allowing to define the extent of proportional correction to compensate occlusal canting in asymmetries (proportional condylectomy), whose level is transferred to VSP using dedicated surgical guides. Likewise, when proportional condylectomy is associated with orthognathic surgery, the entirely virtual management creates automation in surgery and a more predictable outcome. In TMJ replacement, VSP enabled the shift from stock prostheses to customized implants that enable the simultaneous transfer of occlusion and mandibular repositioning exactly as planned. Moreover, when associated with orthognathic surgery, customized prostheses substantially simplify the intraoperative treatment, leading to a mandible first procedure, entirely automated. In parallel, advancements in additive manufacturing and metal printing allowed to manufacture customized implants with complex geometries, including especially extended TMJ prostheses, as well as surgical guides studied to offer both drilling and positioning assistance. This chapter systematically presents the latest updates in computer-guided TMJ surgery.