This study assessed the factors influencing information technologies project performance at Tanzania Police Force Head Quarter. Specifically, the study assessed the associations between Human Resource Capabilities (HRC), Financial Resource Availability (FRA), Legal Framework Adherence (LFA) and Project Performance (PP) at Tanzania Police Force Head Quarter. The study employed a cross-sectional survey research design to collect data from 136 employees at Tanzania Police Force Head Quarter obtained through stratified sampling technique. The study used an online questionnaire and interviews for data collection. In addition, data were analyzed using percentage and multiple linear regression through using SPSS Version 26 and Smart PLS Software Version 4. The study funding shows indirect relationship between HRC, FRA and PP, showing that Legal framework is a significant mediator of HRC, FRA and PP. framework adherence influence project performance at Tanzania Police Force Head Quarter. Therefore, the factors influencing information technologies project performance at Tanzania Police Force Head Quarter were human resource capabilities, financial resource availability and legal framework adherence. The study concluded that, the presence of human resource and financial resource should be regulated with existing legal frameworks for ensuring project performance. Therefore, the study recommended that, the Tanzania Police Force Head Quarter should invest in human resource and financial resource while ensuring existing legal frameworks are implemented.