The demand for university education exceeds the supply in Nigeria, as more than 70% of eligible applicants cannot get admission into Nigerian universities annually. With a current population of 206 million, the World Bank predicts the Nigerian population will surpass the United States to become the third-largest country in the world by 2050. If the current university system cannot meet the demand of the current population, the gap may continue to widen even in the future. Although universities in other countries have adopted online learning to help meet the demand for university education, Nigerian universities' administrators and regulators are reluctant to embrace online education despite its potential to resolve the annual admission crisis. Studies attribute barriers to online learning in Nigeria to intermittent electricity, poor internet connectivity, insufficient computers, cybersecurity issues, and funding. However, there is evidence that these factors have negligible impact on online education because Nigerians maintain a substantial online presence, transact businesses online, and study on online learning platforms such as edX, Coursera, and Udemy. Meanwhile, there is little evidence from the literature regarding the disinclination of online university education despite its visible benefits. Therefore, this study explores factors affecting the adoption of online university education in Nigeria. Through semi-structured interviews, the researcher interviewed key higher education stakeholders -- members of the Committee of Vice-Chancellors of Nigerian Universities and officials of the National Universities Commission. The researcher also analyzed artifacts and secondary data from multiple government agencies. The research scope is limited to these higher education stakeholders' perceptions regarding regulatory, environmental, and technical factors impacting the adoption of online education. The analysis yielded nine findings that answered the research questions. These findings align with existing literature on online education adoption barriers. [The dissertation citations contained here are published with the permission of ProQuest LLC. Further reproduction is prohibited without permission. Copies of dissertations may be obtained by Telephone (800) 1-800-521-0600. Web page: http://www.proquest.com.bibliotheek.ehb.be/en-US/products/dissertations/individuals.shtml.]