The purpose of this study was to investigate the study general trends with regards to Web 2.0 technologies supporting problem-based learning (PBL) environments. A systematic literature review was applied to analyse studies published in this area, with a total of 18 articles included in the review. The content analysis method was applied in the study. The results indicated that the emergence of studies in this area was in 2007. The studies were conducted in different research domains. The qualitative research paradigm was the most frequently used, and higher education students the most preferred study group in the articles. Wiki was the most integrated Web 2.0 tool in PBL environments. Interview was the most selected data collection tool, with qualitative analysis methods the most used in the articles. The variables investigated the most in the studies were perception about the effectiveness of PBL and achievement. The effectiveness of Web 2.0 technologies supporting PBL was the most frequently reported finding. Therefore, the current study was able to identify the recent trends in this research area. Based on the results, the study put forward suggested implications for future research.