The study investigated the relationship between stakeholder engagement in planning and electronic waste management (EWM) among households, business owners, and local officials in Rubaga Division, Uganda. A mixed-methods case study design was employed, utilizing structured questionnaires and interviews to collect quantitative and qualitative data from a sample of 97 respondents selected through purposive and simple random sampling from an accessible population of 200. The data were analyzed to determine the correlation between stakeholder engagement in planning measured through participation in decision-making meetings, goal-setting, and community consultations and EWM effectiveness. The results revealed a strong, statistically significant positive correlation between the two variables, with a correlation coefficient (r) of 0.843 and a significance value (p = 0.000). This indicated that as stakeholder engagement in planning improved, EWM outcomes also increased substantially. The null hypothesis was therefore rejected, confirming that the observed relationship was not due to chance. The study concluded that stakeholder engagement in planning is a critical and meaningful determinant of effective EWM, accounting for a significant proportion of variability in waste management performance. It was recommended that Rubaga Division implement targeted policies focused on inclusive participatory planning, clear communication of EWM goals, and structured feedback mechanisms to enhance coordination, accountability, and sustainability in e-waste management.