Growth studies on human and nonhuman primates contribute to a range of research topics such as somatic growth and the establishment of charts for growth and skeletal maturity, and therefore provide a valuable evolutionary perspective. Longitudinal studies, especially long-term ones, provide the most accurate data to assess the factors that influence growth and development, and to construct growth velocity curves. In this note, we present the main long-term longitudinal radiographic studies of craniofacial growth in human and nonhuman primates. Such studies are extremely rare as they are costly and difficult to implement, especially when ethical and health constraints arise due to the use of X-ray radiographs.