Documentary analysis research design was used in this study to reliably, validly, authentically, and accurately ascertain the Human Development Index (HDI) of countries for comparison of continents in the world as objectively measured by the United Nations Development Programme via the World Wide Web. The investigation examined the three HDI indicators (long and healthy life, access to knowledge and quality education, and a decent standard of living) obtained from the different countries in the world and compared the HDI of the seven continents worldwide. A proportionally stratified sample of 182 was drawn from the 253 countries across continents in the globe for the study. Analysis of Variance and Bonferroni Post Hoc Test were adopted to test the null hypothesis of no significant continental difference in Human Development Index at 0.05 alpha. Results showed that Africa has HDI mean of 0.536 which is significantly lower than that for each of the other continents in the world (Asia 0.714, Europe 0.845, North America 0.733, South America 0.738, and Oceania 0.693), and the global average of 0.697. Europe has the highest HDI with significant overwhelming preponderance over the world average and greater than that of all other continents in the universe. Asia, North America, South America, and Oceania do not differ significantly in their HDI. Each African country should do everything possible to guarantee the three HDI indicators for all its citizenry to radically improve the Human Development Index of Africa. Every country in each continent is charged to fervently improve its Human Development Index by passionately striving at and actually attaining the peak of HDI for the world to essentially arrive at the ideal Human Development Index of 1.00