The 13th International Symposium on Plant Bioregulators in Fruit Production will be held at the Kashiwanoha conference center, which is 35 minutes from Tokyo station; 75 minutes from Tokyo (Haneda) airport; and 100 minutes from Tokyo (Narita) airport, Chiba prefecture, JAPAN from August 27 to 31, 2017. We would like to invite you to attend and contribute in regards to labor saving, high value-added, and high function fruit production in association with plant growth regulation. To improve fruit quality and reduce labor in cultivation, the technique of plant growth regulation has been recently introduced into many kinds of fruits in the world. Therefore, the 2017 symposium will include the pome, stone, sub-tropical, and tropical fruits in ISHS sections. We will discuss the physiological mechanism and cultivation advances made in the field of plant growth regulation.