This paper argues that global university rankings can be understood as a mechanism upholding Taiwan's interests in light of cross-national analysis of university ranking and recent discussion on regionalisation of higher education in Asia. To draw an analytical framework, it begins by delineating a conceptualisation of university ranking, in which ranking exercises are seen as a form of institutions in the globalised field of education politics and policy. In anticipation of the emergence of the Greater China higher education region, the paper suggests that global university ranking can be used as a zoning technology to form an imaginary line of cultural and academic sovereignty, and to affect university strategies and government policies. This analysis not only explains how global university rankings can be used to uphold interests of Taiwan's higher education, but also sheds light on the way to constitute subjectivity in the process of regionalisation of worldwide higher education.