The Overseas Construction Association of Japan, Inc. (OCAJI) is a representative body aiming to promote overseas activities of Japan's construction industry and assist it in contributing to the international community through construction.

OCAJI is a body consisting of leading Japanese construction companies established with the aim of promoting overseas activities of the construction industry and international cooperation.

OCAJI cooperates with Japanese construction companies in overseas projects, assists in international contribution through construction and engages in projects designed to promote international exchange with other countries.