Since the 1980s, the modes of governance of public sectors have undergone substantial changes in most of the Western European countries (e.g. Van Kersbergen & Van Waarden, 2004;de Boer et al., 2010). These public sector wide changes were in many cases inspired and driven by the principles of 'New Public Management' (NPM) that can be viewed as one of the global models of world society (Pollitt, 1990). This shift has also influenced public sector policies in the Central and Eastern European (CEE) countries (Antonowicz & Simonová, 2006;Zgaga et al., 2013). We know that NPM has many faces (Hood, 1991) and that forms, timing and outcomes significantly vary from country to country (Kehm & Lanzendorf, 2006;Paradeise et al., 2009). This also applies to Polish and Ukrainian higher education, where reforms have taken place with the intention of transforming their higher education systems in order to align them more with European higher education systems.We have chosen Poland and Ukraine as two CEE countries with, at first sight, a common socialistic past but with a different present. Nowadays, Poland is a developed country that became an EU member in 2004, while Ukraine, having undergone two revolutions in 2004 and 2013-2014, is only striving for EU membership and is lagging behind in economic progress.In this research, we will focus on one specific public sector, namely higher education, and more particularly on changes in higher education governance in these two countries. The key question addressed in this chapter, therefore, is how the models of university governance in Poland and Ukraine have changed since 1990 through the diffusion of the global model of NPM and how differences and similarities in these patterns of change in governance can be explained. To answer these questions, we will use insights from historical and sociological institutionalism. Historical institutionalism, in particular the concept of path dependence, emphasizes 'historical sequences in which contingent events set into motion institutional patterns or event chains' (Mahoney, 2000, p. 507). Sociological institutionalism provides