* indicates a non-preferred term, which includes a link to the preferred term.
- Latvian Academy of Sciences
- Law Enforcement Assistance Administration*
- Leiden University (Netherlands)
- Leverhuhne Trust
- Leverhulme Trust (United Kingdom)
- Levi Strauss Foundation
- Library of Congress. Congressional Research Service
- Lilly Endowment, Inc.
- Lloyd A. Fry Foundation
- Los Angeles Times
- Louisville Institute
- Luce Foundation*
- Luso-American Development Foundation (Portugal)
- Lynde and Harry Bradley Foundation*