The study examined the challenges associated with cataloguing electronic resources in six randomly selected university libraries in Southwest Nigeria. A questionnaire was administered to current cataloguers and those who had worked in the cataloguing sections of the selected university libraries. A total of one hundred and ten (110) copies of the questionnaire were distributed, out of which a hundred were found usable for this study. A descriptive survey method was used and the data collected was analyzed using descriptive and inferential statistics. The results are presented in tables using simple percentages and mean while the Pearson correlation method was used for the hypothesis. This study highlighted some challenges associated with cataloguing electronic resources such as lack of adequate physical description of some electronic resources, inadequate workflow in cataloguing sections, copyright issues among others
