The study investigated principals' personal variables and information and communication technology utilization in Federal Capital Territory (FCT) senior secondary schools, Abuja, Nigeria. The study adopted the correlational research design. The study used a sample of 94 senior secondary schools (including public and private) in FCT. Stratified sampling technique was used to select 94 principals in the sampled schools. The data for the study were gathered through a questionnaire, which was administered to the principals in the selected senior secondary schools in FCT. To ascertain the validity of the instrument, content validity was adopted. "Principals' Utilization of Information and communication Technology Questionnaire" (PUICTQ) was pilot-tested and reliability coefficient of 0.83 was obtained. Frequency counts, mean score and standard deviation were used to answer the research question while t-test and Pearson product-moment correlation coefficient were used to test the hypotheses at 0.05 level of significant. The study showed that the level of ICT resources utilization by the principals in FCT senior secondary schools was moderate. Also, the study ascertained that there was significant relationship between principals' personal variables and ICT utilization in FCT senior secondary schools. It was concluded that principals' personal variables of gender, experience and ownership of school could influence their utilization of ICT in the management of senior secondary schools in FCT. It was therefore recommended that efforts should be made by the principals to upgrade their knowledge of ICT utilization for their daily tasks for effective management.