Abstract: The purpose of this paper is to examine the effectiveness of the Independent Policing Oversight Authority (IPOA) in enhancing police performance in Starehe Division in Nairobi County, Kenya. The paper seeks to understand the role of IPOA and analyze how this citizen oversight body monitors police performance with a view of ensuring effectiveness and professionalism among police officers. Among the specific issues addressed in the paper are; first whether the measures used by IPOA influences work performance in the National Police Service (NPS). Secondly, the paper analyzes the effectiveness of the strategies that IPOA uses in enhancing the work performance of police officers. Thirdly, and finally, the paper analyzes how IPOA has promoted accountability among police officers in the NPS.