j1

J1 is a designation used in various contexts to denote a version, category, or identifier. Notable uses include the United States Exchange Visitor Program (the J-1 visa) and the top division of professional football in Japan (the J1 League). The label also appears in different product codes, project names, and internal classifications, depending on the organization or field.

The J-1 visa is part of the U.S. Department of State’s Exchange Visitor Program. It supports cultural and educational exchange by pairing participants with approved sponsors. Common categories include students, interns, researchers, teachers, au pairs, and professionals on exchange programs. Eligibility requires sponsorship and a DS-2019 form. J-1 status is nonimmigrant and generally limited to the duration of the program, with work authorized only in relation to the exchange activity. Some participants may be subject to a two-year home-country residence requirement before pursuing certain changes of status, depending on funding sources and program specifics. Extensions and conditions vary by category and sponsor.

The J1 League is the top tier of Japanese professional football, administered by the J.League. It began with the league’s formation in the early 1990s and has operated as Japan’s premier football competition since 1993, featuring promotion and relegation with the J2 League. The league runs on a seasonal calendar and includes clubs from across the country, contributing to domestic competition and international exposure for Japanese football.

In other domains, j1 can appear as a model number, version tag, or internal code used by organizations. Such uses are context-dependent and not standardized.