With the advent of the Internet, most of the academic institutions in the world are providing up-to-date information over their official websites. Nowadays it has been more concerned that the importance of the presence of information through websites to the public. Since web-based information sharing has become more popular and effective, it is required to focus on the usability of a website from the user’s viewpoint. The main objective of the study was to evaluate the usability of the official website of Uva Wellassa University of Sri Lanka under four main dimensions which are website content and organization , website navigation and links, user interface design and website performance. The questionnaire was designed and developed based on twenty usability criteria that are belong to the above four categories.