Abstract. The 2.0 library consists of many applications based on the Web 2.0 application and tools. There are many Library 2.0 tools that can be applied in academic libraries, and the use of Library 2.0 tools varies depending on its function, which can benefit academic libraries. The objective of this study is to investigate whether librarians in academic libraries are practicing Library 2.0, their level of awareness, the use of Library 2.0 in their organization, their acceptance towards the application of Library 2.0 in their organization and how to access it if they encounter problems using Library 2.0. The study will use a quantitative approach involving librarians from three academic university libraries. The result of this study will provide a significant insight into the academic librarian's perception regarding the implementation of Library 2.0, which is useful for the future improvement of the academic library. Keyword: Librarian perception, Library 2.0, Academic Library 2.0.1. IntroductionWeb 2.0 is becoming the essence of the Internet trend today. Web 2.0 is a concept coined by O'Reilly Media in 2004 that refers to a second generation of web-based services such as social networking sites, wikis, communication tools, and folksonomies that emphasize online collaboration and sharing among users ( Peltier-Davis, 2009). The term Library 2.0 was first introduced to the world by Michael Casey in his blog LibraryCrunch in 2005. Library 2.0 was adopted from Web 2.0 technology and its application in the library environment. Library 2.0 can be defined as a change in the interaction between users and libraries in a new culture of participation catalyzed by social web technologies (Holmberg et al., 2009). There are many Library 2.0 tools that...... half of paper ......w Review of Information Networking, 13(2), 11.Stephen, A. (2007). Web 2.0, library 2.0 and librarian 2.0: preparing for the world 2.0. SirsiDynix OneSource, 2(1), 3. Retrieved January 6, 2011, from http://www.imakenews.com/sirsi/e_article000505688.cfmMuhammad Arif and Khalid Mahmood. (2010). The changing role of librarians in the digital world: Adoption of web 2.0 technologies in Pakistani libraries. 76th IFLA Conference and General Assembly: World Library and Information Congress, Sweden. Yushiana Mansor and Sufy Rabea Adawiyah Idris. (2010). Perceptions, awareness and acceptance of library 2.0 applications among librarians at the International Islamic University Malaysia. Webology, 7(2), Retrieved April 2, 2011, from http://www.webology.org/2010/v7n2/a81.htmlZheng, Q. & Wang, S. (2008). Programming library 2.0 that users need. The Electronic Library, 27(2), 6.