Though University libraries have positioned themselves as the main vehicles for the organization, access, distribution and use of knowledge, the current library services will eventually be inadequate to keep pace with the demands and expectations of modern users. Library resources, whether print or electronic are expensive. Therefore, librarians today are grappling with the issues of which type of resources to acquire and in what format. Therefore, it is an essential need of the librarians to know the format preferences of the user for information resources to decide on what format to purchase. Therefore, this study is focused on the assessment of users' preferences for electronic and print information resources available in Sri Lankan University Libraries