The 11th International Congress of Neuroendocrinology (ICN 2026) and the 52nd annual meeting of the Japan Neuroendocrine society (JNS 2026) jointly in Nagoya, Japan on July 26-29, 2026. The theme of this meeting is “Fascinating Neuroendocrinology”. The International Neuroendocrine Federation (INF) was founded in June 2000 at the Council Meeting of the International Society of Neuroendocrinology in Toronto. The INF is an academic partnership with the mission of bringing together researchers and promoting relevant discoveries in the field, holding the ICN every 4 years. The INF is constituted of more than 10 neuroendocrine organizations, including the JNS. The JNS, consisting of around 500 Japanese members, is an interdisciplinary organization encompassing the neuroendocrine field and has a history of 50 years from its first scientific meeting held in 1967. The members include researchers in basic medicine (anatomy and physiology) as well as clinical medicine. The JNS holds an annual scientific meeting where studies on neuroendocrinology are presented, and information is provided to society.