Strategic planning and implementation is essential in preparing public and private organizations to sustain themselves in the dynamic business environment. Therefore, organizations in the public and private sectors must prioritize, formulate, and implement business strategies as the foundation of their survival. Strategic planning implementation not only helps in the formation of strategies but in their implementation too. Despite the importance of strategy planning implementation to public sector organizations, their role in parastatals is not yet fully understood. This research was to establish the association between strategy planning implementation and organizational performance of KRA. Competitive advantage, contingency, and new public management theories were used, and the data was collected and analyzed through a “cross-sectional descriptive study design.” 686 managers represented the target population of the research, from which a sample of 68 managers were selected. The findings showed that strategy implementation (t = 0.306, p= 0.007) contributes the highest to improved organizational performance. This was followed by monitoring and evaluation (t = 0.019, p= 0.762). Mission, values, and vision had the lowest positive change on organization performance (t = 0.005, p= 0.887). The study concluded that strategy planning implementation improves organizational performance in KRA. The study recommended that managers in KRA prioritize strategy planning implementation to improve organizational performance.

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