Abstract: Project Monitoring and Evaluation (M&E) is a critical component of the project management phase, which if not properly handled, may lead to project failure. One aspect that has not been given much consideration is effective implementation of M&E systems as advised by M & E experts. For instance, not much is known how stakeholder involvement influences the implementation of water projects. The general objective of the study was to assess the role of Stakeholder Involvement Practices on implementation of county government funded water projects in Kisii County. This study was anchored in the stakeholder theory. The study adopted a descriptive survey design. The target population included 201 county water staff managing 90 water projects across the county. Census method was used to collect data. The primary data was collected by use of questionnaires. Quantitative data was analyzed by employing descriptive statistics and inferential analysis, and the results were presented by tables and figures.