Simulation now permeates all levels of training in obstetrics and maternal-fetal medicine. We will review the role of obstetric simulation through the continuum of training and practice. Simulation allows learners to acquire skills in a nonthreatening environment while avoiding harm to patients. Simulation in obstetrics evolved from a learning tool for students and residents, to a method for experienced physicians to learn new procedures and reenter the full breadth and depth of practice. Specialty boards and credentialing organizations recognize simulation training as an innovative approach to assess and assure technical, clinical, and teamwork skills.