| Last Name | First Name | Year | City Sort descending | Section/Speaker Type |
|---|---|---|---|---|
| Lascoux | Alain | 1998 | Berlin | Combinatorics |
| Le Gall | Jean-Francois | 1998 | Berlin | Prob & Stats |
| Lewis | D. J. | 1998 | Berlin | Teaching & Popularization of Mathematics |
| Lindblad | Hans | 1998 | Berlin | Part. Diff. Equations |
| Lohkamp | Joachim | 1998 | Berlin | Differential Geometry and Global Analysis |
| Macdonald | I. G. | 1998 | Berlin | Plenary |
| Machedon | M. | 1998 | Berlin | Part. Diff. Equations |
| Mahowald | Mark | 1998 | Berlin | Topology |
| Mallat | Stephane | 1998 | Berlin | Plenary |
| Malle | Gunter | 1998 | Berlin | Algebra |
| Matousek | Jiri | 1998 | Berlin | Combinatorics |
| Mattila | Pertti | 1998 | Berlin | Analysis |
| McCoy | Barry M. | 1998 | Berlin | Mathematical Physics |
| McDuff | Dusa | 1998 | Berlin | Plenary |
| McMullen | Curtis T. | 1998 | Berlin | Ordinary Differential Equations & Dynamical Systems/Prize winner |
| Merel | Loic | 1998 | Berlin | Number Theory |
| Merle | Frank | 1998 | Berlin | Part. Diff. Equations |
| Milman | Vitali | 1998 | Berlin | Analysis |
| Milton | Graeme | 1998 | Berlin | Applications |
| Miwa | Tetsuji | 1998 | Berlin | Plenary |
| Mochizuki | Shinichi | 1998 | Berlin | Number Theory |
| Morawetz | Cathleen S. | 1998 | Berlin | ICM Emmy Noether Lecture |
| Moser | Jürgen | 1998 | Berlin | Plenary |
| Mozes | Shahar | 1998 | Berlin | Lie Groups |
| Müller | Detlef | 1998 | Berlin | Analysis |