| 14-19 Nov 1999 |
AAECC | USA | Hawai |
| 22-24 Sep 1999 | Outils pour un calcul numérique fiable | France | Paris |
| 18-18 Sep 1999 | JOURNEE QUANTIQUE DE NICE | France | Nice |
| 14-17 Sep 1999 | TPHOLs'99 | France | Nice |
| 06-10 Sep 1999 | COMMON PROBLEMS TO APPROXIMATION THEORY AND SYMBOLIC COMPUTATION | Spain | UNIVERSIDAD DE CANTABRIA, SANTANDER |
| 23-25 Aug 1999 | IMS 99 | Austria | Castle of Hagenberg, Linz |
| 18-20 Aug 1999 | Scientific Computing | Austria | Linz, Risc |
| 02-06 Aug 1999 | Finite fields | GERMANY | UNIVERSITY OF AUGSBURG |
| 29-31 Jul 1999 |
Issac'99 | Canada | Vancouver |
| 18-28 Jul 1999 | FoCM'99 | England | Oxford |
| 05-09 Jul 1999 | ICIAM 99 | England | Edinburg |
| 01-07 Jul 1999 | CURVES AND SURFACES'99 | France | St Malo |
| 24-27 Jun 1999 | IMACS-ACA'99 | Spain | Madrid |
| 08-08 Jun 1999 | Newton's Day | France | Université Paul Sabatier, 118 route de Narbonne, Toulouse |
| 07-11 Jun 1999 | Series Formelles et Combinatoire Algebrique FPSAC'99 | Spain | Barcelone |
| 03-05 Jun 1999 |
COCOA VI | Italy | Villa Gualino, Turin |
| 02-04 Jun 1999 |
JFPLC'99 | France | Lyon |
| 31-04 May 1999 |
CASC-99 Second Workshop on Computer Algebra in Scientific Computing | Germany | Munich |
| 11-14 Apr 1999 | RECOMB'99 | France | Lyon |
| 22-26 Mar 1999 |
Ecole Jeunes Chercheurs en Algorithmique et Calcul Formel | France | Bordeaux |
| 11-12 Mar 1999 | Matrices creuses et équations différentielles | France | Rennes |
| 04-06 Mar 1999 | STACS'99 | Germany | Trier |
| 02-03 Feb 1999 | Complexité, Modèles Finis et Bases de Données | France | Jussieu |