Japanese diaspora

The Japanese diaspora and its individual members, known as Nikkei (日系) or as Nikkeijin (日系人), comprise the Japanese emigrants from Japan (and their descendants) residing in a country outside Japan. Emigration from Japan was recorded as early as the 15th century to the Philippines, but did not become a mass phenomenon until the Meiji period (1868–1912), when Japanese emigrated to the Philippines and to the Americas. There was significant emigration to the territories of the Empire of Japan during the period of Japanese colonial expansion (1875–1945); however, most of these emigrants repatriated to Japan after the 1945 surrender of Japan ended World War II in Asia.

According to the Association of Nikkei and Japanese Abroad, about 4 million Nikkei live in their adopted countries. The largest of these foreign communities are in Brazil, the United States, the Philippines, China, Canada and Peru. Descendants of emigrants from the Meiji period still maintain recognizable communities in those countries, forming separate ethnic groups from Japanese people in Japan. The largest of these foreign communities are in the Brazilian states of São Paulo and Paraná. There are also significant cohesive Japanese communities in the Philippines, Peru and in the American state of Hawaiʻi. Nevertheless, most emigrant Japanese are largely assimilated outside of Japan.

As of 2022, the Japanese Ministry of Foreign Affairs reported the five countries with the highest number of Japanese expatriates as the United States (418,842), China (102,066), Australia (94,942), Thailand (78,431) and Canada (74,362).