This study is an examination and comparison of the manner in which Nigeria, Iran and Libya used oil revenue for their economic development. The research methodology was the case study approach, utilizing statistical time series data, as well as a historical profile of each country's income and expenditure accounts. As a prelude to the oil injection, the pre-oil revenue economy, the history of the oil industry, and the previously implemented development plans of each of these nations is surveyed. The impact of the oil revenues on the standard of living and the non-oil sectors of these economies is examined. The paper concludes with projections concerning each country's ability to continue to promote economic development when its exhaustible oil reserves runs out.