The following websites provide free access to theses and dissertations from various institutions.

ProQuest Dissertations & Theses Open provides full text of open access dissertations and theses free of charge. You can quickly and easily locate dissertations and theses relevant to your discipline, and view the complete text in PDF

Aims to be the best possible resource for finding open access graduate theses and dissertations published around the world. Metadata (information about the theses) comes from over 1100 colleges, universities, and research institutions. OATD currently indexes 3,822,916 theses and dissertations.

Brings together free, full-text scholarly articles from hundreds of universities and colleges worldwide. Curated by university librarians and their supporting institutions, the Network includes a growing collection of peer-reviewed journal articles, book chapters, dissertations, working papers, conference proceedings, and other original scholarly work.