The study examined the web information seeking behavior of undergraduate students by evaluating information sources for academic purpose on the web. Three hundred questionnaires were distributed evaluating students perceptions on information sources on the web. Descriptive analysis, One-Way ANOVA was carried out in the analysis of data using Statistical Package for Social Science (SPSS) software. The study revealed that relevance of the information source was a major criterion for evaluation among undergraduate students in Landmark University. It was further revealed that undergraduate students showed preference for search engines as the preferred information source medium on the web as more than 50% of students rated accessibility and authority on search engines high. Results obtained from the study further revealed the need to improve information literacy skills and the information retrieval skills of undergraduate students in Nigeria.