L
- Guy Laforest - Liberalism (John Locke) scholar and Quebec and Canadian politics specialist
- Harold Lasswell - Political communications, pioneered early efforts to establish the policy sciences and influential contributor to the Stages Heuristic
- Jack Layton - Former leader of the New Democratic Party of Canada, had a Ph.D in Political Science.
- Richard Ned Lebow - Noted constructivist, Cold War expert, author of Tragic Vision of Politics.
- Michael Leifer - International Relations, South Asian Studies, London School of Economics
- Arend Lijphart - Originator of consociationalism.
- Dan Lipinski - US House of Representatives (IL-D, 3rd)
- Juan Linz - Democracy specialist
- Seymour Martin Lipset - Renowned political theorist on democracy and development and parties. Taught at Stanford University.
- Ramon Llull - Discoverer of Condorcet Criterion and Borda Count
- Theodore Lowi - Major scholar of American politics at Cornell University
- Ian Lustick - State territoriality ethnic conflict and computer modelling in political science; University of Pennsylvania
Read more about this topic: List Of Political Scientists, Notable Political Scientists