The 6th International Interdisciplinary Conference Balkan Express 2021: Neighbors and neighborhood in the Ballkans took place in Prague on November 12-13, 2021 as a hybrid event. It focused on the notions, practices and discourses of neighbors and neighborhood in the Balkans (historical, anthropological, political and economic perspectives). Active participants included scholars from the Czech Republic, USA, Slovenia, Poland, Kosovo, Serbia, Greece, Bosnia and Herzegovina, Belgium, Germany, Austria, United Kingdom, Croatia and Montenegro.