Business Process Reengineering (BPR) is a technique for critical analysis and radical redesign of prevailing business processes to obtain improvements in performance measures. Though BPR projects seem promising and offer many benefits to organisations, researchers have found that typically around seventy percent of reengineering projects fail in action due to various issues.  Thus, the purpose of this paper is to identify the issues which may have significant impacts on the successful implementation of BPR projects. Four case studies were conducted to identify the issues faced during actual BPR project implementation. Thirty (30) unique issues faced by the organisations in different phases of the reengineering process (i.e. Pre-BPR implementation phase, BPR implementation phase and Post-BPR implementation phase) were identified. It is hoped that the findings of this study could facilitate the practitioners in identifying the issues in implementing BPR projects that should be given enough consideration to assure the success of BPR projects.