American expatriate baseball players in Japan have been a feature of the Japanese professional leagues since 1934.

The Quarterly Publication of Individuals Who Have Chosen to Expatriate, also known as the Quarterly Publication of Individuals, Who Have Chosen to Expatriate, as Required by Section 6039G, is a publication of the United States Internal Revenue Service in the Federal Register, listing the names of certain individuals with respect to whom the IRS has received information regarding loss of citizenship during the preceding quarter.