Sleep is essential for the overall health and well-being of humans. It has many benefits which cannot be overemphasized. Leadership encompasses various mindsets, behaviours and responsibilities to guide individuals and organisations for achieving common goals. This paper explores the profound influence of adequate Sleep on effective leadership. Adequate Sleep is essential for cognitive function as it plays a vital role in memory consolidation, decision making and problem-solving abilities, all of which are necessary for effective leadership. The study employs descriptive research design of the survey type to explore the existing data on Sleep and leadership and corroborate with observation and unstructured interview. Findings from the study reveals that effective leadership styles are enhanced by having adequate Sleep. Leaders who sleep well improve their performance and also influence the sleep health of their employees. The paper encourages organisations to educate their leaders on how to have adequate Sleep and also establish sleep-friendly policies for their organisation. The paper concludes on the note that a positive relationship that cannot be overemphasized exists between effective leadership and adequate Sleep.