Participatory budgeting was introduced in Latin America in 1989, and within 10 years, this innovation spread all over the world. At the same time, researchers outside Latin America showed a growing interest in the issue, resulting in more diversified research. A few scholars have already tried to provide comprehensive literature reviews; however, these efforts have had a narrow focus or have appeared as embedded parts of analyses of specific issues. This article aims to (1) identify recent worldwide research trends in participatory budgeting, (2) identify the most popular issues addressed by international research and (3) suggest avenues and subfields of further research. We employed bibliometric techniques to analyse articles published in journals that were indexed and abstracted in the Web of Science database from 2001 to 2020.