Rather than propose a classification of globalization theories I identify here a variety of theoretical discourses that typically serve as heuristic tools in concrete globalization studies. The focus is on key theories and theorists that have already or are likely to become markers across social sciences disciplines and humanities for the field of globalization studies. What follows is not a comprehensive review of extant theories, which would be impossible here, but a limited selection intended to provide a view of the range of theoretical discourse on which scholars researching globalization are likely to draw