This study investigated the implementation of Open University Programmes in Nigeria. The researchers generated 4 research questions and 4 null hypotheses guiding the study. A questionnaire was the major instrument used for data collection. 1,424 undergraduate and postgraduate students representing 40% of the total population of study selected using stratified random sampling technique. The study used a descriptive and inferential statistics. Data collected were converted to means and further subjected to z-test. The z-test was used to test the 4 null hypotheses at 0.05 level of significance. The study amongst other things found out that there were significant differences between the undergraduate and postgraduate students of National Open University of Nigeria (NOUN) programmes in their perception of the following: adequacy of infrastructures and other learning materials, quality of academic staff, effectiveness of instructional delivery and adequacy of research grants for effective implementation of NOUN programmes in Nigeria.