Digital Library of Theses and Dissertations

Looking for electronic theses and dissertations (ETDs)...? 

Then look no further than The Networked Digital Library of Theses and Dissertations (NDLTD). They have created a catalog that gives access to ETDs from all over the world.

Search tools developed for the NDLTD Union Catalog.
Use the following to search for authors, keywords, subjects, institutions etc:

Scirus ETD Search
A comprehensive scientific research tool from Elsevier, Scirus ETD Search provides an advanced search that can narrow results to theses and dissertations as well as provide access to related scholarly resources.

VTLS Visualizer
This is a dynamic search and discovery platform with sophisticated functionality.  You can sort by relevance, title, and date.  In the current implementation, faceted searches are available by language, continent, country, date, format and source institution.  Additional facets, such as subjects or departments, can be added if desired.

Other useful ETD search tools:
ADT (Australiasian Digital Theses Program)
This search portal provides searching, browsing, and access to ETDs produced in Australia.

Biblioteca Digital de Teses e Dissertacoes
A search tool for accessing ETDs produced in Brazilian universities.

Cybertesis
A portal developed jointly by the University of Chile, the Universites de Lyon, Montreal, and Alexandrie, and the University of Geneva for accessing full text ETDs from many countries, including Bolivia, Brazil, Canada, Chile, France, Hong Kong, Mexico, Peru, Spain, and the United States.

DART-Europe E-theses Portal
A discovery service for open access research theses awarded by European universities.
Deusche National Bibliothek
Dissertations since 1998 are available via search in the German National Library.

DiVA
This portal provides access to ETDs and research publications written at 26 institutions in Scandinavia.

EThOS
Electronic Theses Online Service (EThOS) offers free access, in a secure format, to the full text of electronically stored UK theses--a rich and vast body of knowledge.

NARCIS
This search portal provides access to ETDs produced in the Netherlands, as well as access to a variety of other research and data sets.

National ETD Portal (South Africa)
This search portal provides access to ETDs produced in South Africa.

RCAAP - Repositório Científico de Acesso Aberto de Portugal
The RCAAP's mission is to promote, support and facilitate the adoption of the open access movement in Portugal. RCAAP The project aims to: increase the visibility, accessibility and dissemination
of academic activity and Portuguese scientificresearch, facilitating the management and access to information about scientific production and integrate Portugal into a set of international initiatives.  This portal offers a union catalog with digital contents from more than 30 institutions.

Theses Canada
A union catalog of Canadian theses and dissertations, in both electronic and analog formats, is available through the search interface on this portal.