Japan's penetration into foreign markets in industries ranging from automobiles to semiconductors has fueled great interest in Japanese foreign investment. Japan now exerts tremendous influence over the international economy. Backed by statistics and theory, this work examines Japanese direct foreign investments around the world and across various industries since World War II. It explores Japan's overseas acquisitions around the globe, the internationalization of its financial services industry and the roots of its foreign investment including the rebuilding of its economy after World War II and its success in technological domination of key industries. The study begins with a general theoretical and historical overview of Japanese overseas investment. It then focuses on individual regions and countries in the world including the United States, Canada, Latin America, Europe, Africa, Asia and the Pacific Ocean region. Particular attention is addressed to the United States and Southeast Asia, the areas where most of Japan's overseas investments are concentrated.