Japanese residing abroad; overseas Japanese
Refers to Japanese citizens who live outside Japan, often used in official, demographic, or community contexts.
There are Japanese supplementary schools for Japanese residing abroad in various places.
The number of Japanese residing abroad is increasing year by year.
日系人 refers to people of Japanese descent regardless of citizenship, while 在外日本人 specifically denotes Japanese citizens living overseas.
Compound of 在外 (ざいがい, 'abroad') + 日本人 (にほんじん, 'Japanese person').