Prof.dr. L.P.H.J. Aarts

• Medicine/LUMC

Prof.dr. J. Aarts

• Science
• Leiden Institute of Physics (LION)
• Quantum matter

Prof.dr. A.M. Aartsma-Rus

• Medicine/LUMC

Prof.dr. P.H.A.M. Abels

• Governance and Global Affairs
• Institute of Security and Global Affairs
• Intelligence and Security

Prof.dr. J.P. Abrahams

• Institute of Biology Leiden (IBL)

Prof.dr. W.P. Achterberg

• Medicine/LUMC

Prof.dr. A. Achúcarro

• Leiden Institute of Physics (LION)
• Science
• Topological matter
• Cosmological matter

Prof.dr. W.F. Admiraal

• Leiden University Graduate School of Teaching

Prof.dr.mr. J.A.A. Adriaanse

• Institute of Tax Law and Economics
• Business Studies
• Law
• Business & Liability Research Network

Prof.dr. J.M.F.G. Aerts

• Leiden Institute of Chemistry (LIC)
• Fundamental Research in Chemical Biology
• Medical Biochemistry

Prof.mr.dr. M.J.A.M. Ahsmann

• Civil Procedure Law

Prof.dr. P.M.M.G. Akkermans

• Archaeology
• World Archaeology
• Archaeology of the Near East
• Leiden University Centre for the Study of Islam and Society

Prof.dr. A. Algra

• Medicine/LUMC

Prof.dr. L.R.A. Alink

• Education and Child Studies
• Forensic Family and Youth Care Studies

Prof.mr. E.A. Alkema

• Law
• Institute of Public Law
• Constitutional and Administrative law