Primatology in Japan started with a small group of young scientists from Kyoto University (Imanishi, Itani, Kawai, and Kawamura) in 1948. Elucidating the social system of Japanese macaques to understand the origin of the human family was a strong impetus in the beginning, focusing on the social behavior of provisioned troops, enhanced over time by genealogies maintained for many decades. Many important discoveries about Japanese macaques of universal relevance came from this work: for example, cultural behavior, matrilineal inheritance of dominance rank, male dispersal, the role of kinship on troop fission, and intraspecific variations in behavioral ecology. Long‐term research overseas also led to many ground‐breaking discoveries, including infanticide in hanuman langurs, social organization of gelada and hamadryas baboons, genital–genital rubbing in bonobos, gorilla life history, and self‐medication in chimpanzees, to name just a few. From the mid‐1980s onward, primatologists in Japan began to address broader evolutionary questions, leading the discipline on many fronts as their international networks and focus expanded.