This article is part of the special section "Think Tanks in Central and Eastern Europe" guest-edited by Katarzyna Jezierska and Serena Giusti.This is an introduction to the Special Section on Think Tanks in Central and Eastern Europe. Apart from this introduction, the Section includes four articles, which explore the nature and conditions of think tanks operating in Belarus, Ukraine, Czech Republic, and Poland. Think tanks are usually understood as institutions claiming autonomy whose main aim is to influence policy making based on the social analysis they produce. The most apparent blind spot in extant think tank research is its predominant focus on the English-speaking world. We argue that by focusing on think tanks in non-Western contexts, we can better understand think tanks. When studying the diffusion of the organizational form of think tanks to new contexts, it is not enough to maintain the "sender" perspective (the formulation of the institutional characteristics of think tanks in the contexts in which they first emerged). We need to complement or even modify that perspective by also taking into account the "receiver" perspective. In other words, internationally circulated ideas and institutional patterns are always interpreted and translated in local "receiving" contexts, which coproduce, reformulate, and readjust the blueprint. Our focus in this Section is therefore on the translation and local adaptation of the think tank institution in the context of Central and Eastern Europe, a region that has undergone deep changes in a relatively short period.