We cordially invite you to participate in the 13th International Conference on the Chemistry of Selenium and Tellurium (ICCST-13), which will be held in Gifu on May 23rd (Monday)–27th (Friday), 2016. The conference follows the successful series of ICCST conferences in New York (1971), Lund (1975), Metz (1979), Birmingham (1983), Oak Ridge (1987), Osaka (1991), Aachen (1997), Aguas de Sao Pedro (2000), Mumbai (2004), Ludz (2007), Oulu (2010), and Cardiff (2013). The venue for the upcoming ICCST was determined at the international advisory board meeting on July 23, 2013 at Cardiff. Since Osaka, Japan first hosted the ICCST conference in 1991, this will be the second time for Japan to serve as host country. Although the last 25 years have seen dramatic developments in our scientific fields, researchers in various fields have had lesser chance to gather. A conference such as this offers a good opportunity for fellow researchers and experts from interdisciplinary fields of science to share and learn, with the emphasis on ‘selenium and tellurium’ chemistry here in Gifu.