On which databases can I search for theses and dissertations?

QuestionOn which databases can I search for theses and dissertations?

There are several databases of theses and dissertations from other universities, not only in Taiwan but also worldwide.  Get to NTU Library Database Search, click on “Content Type,” and choose “Dissertations/ Theses.”



  1. National Digital Library of Theses and Dissertations in Taiwan (臺灣博碩士論文知識加值系統): The database is established by the "National Central Library" (國家圖書館). It is the most comprehensive online system of dissertations in Taiwan. You may download theses and dissertations that have been authorized.
  2. Airiti Library (華藝線上圖書館), also known as Chinese E-Theses & Dissertations Service, collects the theses and dissertations of 60 universities and colleges in Taiwan. The database provides the abstracts and full texts that have been authorized.


The United States and Canada

  1. PQDT (ProQuest Dissertations & Theses) database is the most extensive abstract of master’s thesis and doctoral dissertation in scale. PQDT has more than 5 million pieces of thesis and dissertation indexes from the USA and Canada. Theses and dissertations published after 1997 allow free browsing for the first 24 pages.  (User guide)
  2. The Digital Dissertation Consortium (DDC) consists of 90 institutes of higher education in Taiwan. The consortium acquires PDF full text of PQDT, arranges them in the DDC database to share with their members, and has more than 200,000 items with full text.



  1. NDLTD (The Networked Digital Library of Theses and Dissertations): It allows collective search for e-theses within cooperating institutions, and additionally lists the websites of theses and dissertations from various universities and graduate institutes.
  2. EThOS: Electronic theses online service of British Library, in the United Kingdom.
  3. DART-Europe E-theses Portal: It has free access to theses from about 30 countries and regions in Europe.
  4. TroveDigital theses and dissertations from Australia.
  5. CNKI: Theses and dissertations from China.
  6. IRDB (Institutional Repositories DataBase): Theses and dissertations from the universities in Japan.
  7. RISS (Research Information Sharing Service): Theses and dissertations from universities in Korea.


※ User guide: Where to find dissertations and theses?