The study examined the relationship between mobile money services and transaction efficiency in Uganda, using Wakiso District, Entebbe Municipality as a case study. The study adopted a descriptive cross-sectional research design and targeted administrators, financial and procurement officers, e-payment service providers, transaction processing staff, and e-payment system users. A sample size of 244 respondents was determined using the Krejcie and Morgan sample size table and selected through a mixed sampling approach involving purposive and simple random sampling techniques. Data were collected using structured questionnaires and key informant interviews, and analyzed using the Statistical Package for Social Sciences (SPSS). The results indicated a strong positive relationship between mobile money services and transaction efficiency, as evidenced by a Pearson correlation coefficient of r = 0.719, which was statistically significant at the 0.05 level. The null hypothesis was rejected, confirming that increased adoption and use of mobile money services were associated with improved transaction efficiency. The findings showed that mobile money services enhanced transaction speed, reduced operational delays, improved accuracy, and increased convenience for users in Entebbe Municipality. The study concluded that mobile money services played a significant role in improving transaction efficiency and supporting effective financial transactions at the local level. It was recommended that mobile money service providers improve network reliability and agent liquidity, while policymakers strengthened regulatory oversight and interoperability to further enhance transaction efficiency. Continuous user sensitization was also recommended to maximize effective utilization of mobile money services.