This short note introduces the second special issue focusing on the analysis of comparative data from the International Social Survey Programme (ISSP) Social Inequality (SI) module. In addition to expressing our appreciation for our colleagues on the drafting group for sharing their time and expertise to shape the content of the 2019 module, we provide a summary of the three empirical articles featured in this second special issue. These articles represent a further contribution to our understanding of inequality beliefs more than three decades since the first ISSP SI module was fielded in the late 1980s. In conclusion, we encourage the global research community to make extensive use of the 2019 ISSP SI module data to further explore the dynamics of inequality beliefs and socioeconomic conditions worldwide.