A comprehensive collection of dissertations and theses from around the world from 1861-present.
Full text since 1997.
Abstracts since 1980 for doctoral dissertations and 1988 for masters' theses.
Citations since 1861.
Citations are indexed in Web of Science in the ProQuest ™ Dissertations & Theses Citation Index collection.
CRL holds more than 800,000 doctoral dissertations outside of the U.S. and Canada.
Search dissertations in the dissertations section of the CRL catalogue.
Digitized dissertations can be searched in the catalogue's e-resources section.
A collection of more than 800,000 international full text theses and dissertations.
Try searching Google Scholar for theses posted on institutional digital repositories or on personal web pages.
A web search engine devoted to Science and Technology.
Search for dissertations, theses and published material based on theses catalogued in WorldCat by OCLC member libraries worldwide.
In Advanced Search, you can search by author, title, subject, year, and keyword.
Under Subtype Limits, select Theses/Dissertation from the Any Content menu
Österreichische Dissertationsdatenbank
The Austrian dissertation database contains the bibliographical data of dissertations approved in Austria from 1990 on, and in most cases the relevant abstracts. (This website is hosted by the National Library of Austria).
National Library of Australia’s Trove Service
Search for full text digital theses from Australian universities.
On the Advanced search screen under Format, select Thesis.
DART-Europe: Access to full text theses and dissertations from many countries in Europe.
Europeana: Additional electronic dissertations from other European libraries.
Système universitaire de documentation (Sudoc): Provides access to records and some electronic theses and dissertations published at French research institutions.
DissOnline provides information on the subject of electronic university publications. It can be used to find out directly all about online dissertations and post-doctoral theses. Sample documents can be downloaded to provide help in the creation of electronic university publications. For more information about the portal, please go to German National Library website (DNB).
TESIUNAM: Tesis del Sistema Bibliotecario de la Unam
(Theses from the National University of Mexico / Universidad Nacional Autónoma de México). To search for electronic theses, click on “tesis electrónicas (REDUNAM).”
The Center for Research Libraries and the British Library have made available online 400 UK doctoral theses focusing on the Middle East, Islamic studies, and related subjects. More information.
Some Dutch e-theses are available through NARCIS.
South America
For more university/national library catalogues, search for the word University/Universidad and the country (Argentina, Peru, etc.) in Google. Find the link to the library (biblioteca) and search the catalogue for theses (tesis). You may need to click on the advanced search function (búsqueda guíada or búsqueda avanzada) and select tesis as a format or type.
There are several portals/catalogues in Spain for theses and dissertations. Here are some examples listed on Spain’s National Library website:
This is a cooperative repository of digital theses from the University of Cataluña and other autonomous communities (such as Murcia, Cantabria, Barcelona, and Oviedo)
For print and electronic dissertations, please consult the Swiss National Library website.
EThOS: Access to doctoral dissertations (paper and electronic) from UK institutions of higher education.