This document outlines a study examining the effect of strategic leadership, organizational innovativeness, and information technology capability on effective strategy implementation in Nigerian tertiary institutions. The study draws on resource-based view, dynamic capability, and complementarity theories. A quantitative research design was used, surveying 104 deans from public tertiary institutions. Data was analyzed using PLS-SEM path modeling. The results found that strategic leadership, organizational innovativeness, and IT capability positively influence effective strategy implementation. However, IT capability did not moderate the relationship between organizational innovativeness and strategy implementation. The study provides support for most hypotheses and contributes to literature on strategy implementation, particularly in African contexts.