The aim of this study was to determine the mediating role of competitiveness on the relationship between intrapreneurial skills of manager and corporate sustainability. A descriptive correlation design was used to assess the relationship of these variables using Pearson r and Regression Technique. The findings of the study revealed that the levels of intrapreneurial skills of manager, corporate sustainability and competitiveness among commercial banks are all very high and the relationship between intrapreneurial skills of manager and corporate sustainability; intrapreneurial skills of manager and competitiveness and competitiveness and corporate sustainability are all significant. The final result showed partial mediation of competitiveness on the relationship between intrapreneurial skills of manager and corporate sustainability.