| Petra Aarts (Maastricht, NL) | P323 |
| Nurettin Abacýoglu (Ankara, TR) | P328 |
| Yasser Abdallah (Gießen, DE) | P264 |
| Juliana Abraham (Berlin, DE) | P173 |
| Helmut Acker (Dortmund, DE) | P113 |
| Klaus Addicks (Cologne, DE) | O3 |
| Feyza Ademoglu (Ankara, TR) | P328 |
| Patrick Ahlers (Homburg/Saar, DE) | P285 |
| Nisar Ahmad (Cincinnati, US) | P166 |
| Shakil Ahmad (Birmingham, GB) | P103, P159, P275 |
| Asif Ahmed (Birmingham, GB) | P103, P159, P275 |
| Suborna Ahmed (Birmingham, GB) | P103 |
| Le Ahn Luong (Maastricht, NL) | L47 |
| Hafid Ait Oufella (Paris, FR) | O233, P287, P288 |
| Fatma Akar (Ankara, TR) | P106, P107 |
| Nynke van den Akker (Leiden, NL) | L59, P312 |
| Bahjat Al-Ani (Birmingham, GB) | P103 |
| Hannes Alber (Innsbruck, AT) | P299 |
| Hannes Alber (Innsbruck, AT) | P298, P334 |
| Hannes Franz Alber (Innsbruck, AT) | P189 |
| Roxana Albu (Bucharest, RO) | P183 |
| Natalia Alenina (Berlin, DE) | P352 |
| Giulio Alessandri (Milano, IT) | O45 |
| Dorin Alexandru (Bucharest, RO) | P185 |
| Petra Algenstaedt (Hamburg, DE) | O27, P127 |
| Francois Alhenc-Gelas (Paris, FR) | O37 |
| Ferhana Ali (London, GB) | L71 |
| Ziad Ali (Oxford, GB) | P78 |
| Kari Alitalo (Helsinki, FI) | K201, P309 |
| Fanneke Alkemade (Leiden, NL) | P304 |
| Cinzia Allegrucci (Nottingham, GB) | L1 |
| Roy Allenspach (Basel, CH) | P135 |
| Ragnar Alm (Malmö, SE) | P345 |
| Alexander Alter (Berlin, DE) | P173 |
| Philippe Alzieu (Pessac, FR) | P311 |
| Ekaterina Amosova (Kiev, UA) | P303 |
| GM Anantharamaiah (Los Angeles, US) | L52 |
| Birgit Andrée (Düsseldorf, DE) | O51 |
| Ulrich von Andrian (Boston, US) | L227 |
| Ctirad Andrys (Hradec Kralove, CZ) | P188 |
| Shelagh Anthony (London, GB) | P293 |
| Nao Aoyama (Kanagana, JP) | P197 |
| Daniel Appel (Hamburg, DE) | O237 |
| Eloisa Arbustini (Pavia, IT) | P245 |
| Diego Ardissino (Parma, IT) | P245 |
| Patrice Ardouin (Villejuif, FR) | O233 |
| Chiara Armani (Pisa, IT) | P314, P82 |
| Jean-François Arnal (Toulouse, FR) | O206, O219, O5, P311 |
| Peter Arner (Stockholm, SE) | L234 |
| Muhammad Arshad (Gießen, DE) | P257, P261 |
| Helen Arthur (Newcastle-upon-Tyne, GB) | L28 |
| Muhammad Aslam (Gießen, DE) | P257, P283, P284 |
| Bektaş Atasever (Amsterdam, NL) | L66 |
| Kirstin Atrott (Berlin, DE) | O230 |
| Michael August (Mainz, DE) | P93 |
| Alexandr Avtandilov (Moscow, RU) | P246 |