Oriental Consultants Co., Ltd. provides consulting services for sustainable development worldwide. The company offers consulting services to support the completion of various projects in a range of situations from upstream studies, such as planning, surveys, and design to downstream processes comprising implementation, operation, and maintenance. It provides services in the fields of environment, road transportation, water management, railways and mass transit, ports and harbors, airports and aviation, agriculture and rural development, and architecture. The company was founded in 1957 and is headquartered in Tokyo, Japan with a network of branch offices in Japan.