There are numerous under-researched topics that fall under the umbrella of comparative international human resource management (IHRM) theory and practice. We address three in particular: talent management (TM), international mobility, and diversity. The degree of convergence of HR practices with Western-style so-called “best practices” is a topic of much dispute. We argue that sociocultural and institutional factors are critical determinants of HR practices, and we underscore the importance of the sociocultural context in IHRM. The reality unfolding is that of multiple factors, not exclusive to international best practices, playing a role in the development of HR practices in various international contexts.