This article is a review of the literature concerned with transnational, offshore, cross-border, and borderless higher education, which together form a new thematic field within higher education research from the early 2000s onwards. The review places emphasis on the development of this field as well as its most cited contributions. The literature derives from the Database of Research on International Education, while the citation data comes from Google Scholar. The first section describes the growth of the field and its cognitive and institutional structure in terms of keywords, publication types, journals, and topic clusters. The second section provides a review of the most recognized work of this thematic area. Research related to the main themes studied under the label of transnational higher education is discussed. Finally, future directions for research, including methodological issues and substantive concerns, are addressed.