JACG(the Japanese Association for Crystal Growth) is a national, non-profit organization that is affiliated with IOCG (the International Organization for Crystal Growth). The JACG was launched in 1974 and the first volume of the Journal of the JACG was issued. The NCCG (the National Conference on Crystal Growth) was started in 1969 before the JACG was organized.

The purpose of the JACG is to advance the basics and applications of crystal growth. The JACG holds the NCCG, special lectures, meetings, symposia, publishes the Journal of the JACG and others, presents awards for the outstanding activities on crystal growth, hosts and supports the activities in cooperation with the IOCG and other countries, and conduct other appropriate activities to achieve the JACG purposes.

The 16th International Summer School on Crystal Growth (ISSCG-16)
was held in Lake Biwa, Shiga, Japan on August 1-7, 2016.

The 18th International Conference on Crystal Growth and Epitaxy (ICCGE-18)
was held in Nagoya, Japan on August 7-12, 2016.