The construction industry plays a significant role in long-term national development and economic progress, most especially for emerging nations. The construction industry produces waste in terms of time and other resources to the tune of 57%. This enormous waste contributes greatly to inefficiency, high cost of production and eventually to low productivity. This brought about the concept of lean construction (LC) principles and its adoption. This study therefore seeks to examine the level of adoption of lean construction practices in the Nigerian construction industry, particularly within the context of public tertiary education infrastructure. The data used for this study was obtained through the administration of questionnaires to elicit responses from the target respondents. Data were analyzed using frequency, percentages and Relative Importance Index (RII) to measure the level of importance of various factors. The study revealed that the majority of the respondents was aware of and adopted lean construction and this eventually resulted in high-quality work output and elimination of waste on site. These findings underscore the importance of integrating lean methodologies at every stage of construction. The findings of this study will also provide valuable insights for researchers, policymakers, practitioners, and stakeholders, enhancing their understanding of the adoption of lean construction principles and identifying research gaps. A further study that can review the level of the adoption of lean construction using a wider scope in term of number of target respondents and not limited to only TETFund-Sponsored construction projects that can give a clearer picture is therefore recommended.