I. ANALYTIC ONTOLOGY
Tomasz Bigaj (University of Warsaw)
Mariusz Grygianiec (University of Augsburg)
Jan Hauska (University of Warsaw)
Katarzyna Paprzycka (University of Warsaw)
II. APPLIED ONTOLOGY
Paweł Garbacz (The John Paul II Catholic University of Lublin)
Piotr Kulicki (The John Paul II Catholic University of Lublin)
Józef Lubacz (Warsaw University of Technology)
Maciej Piasecki (Wrocław University of Technology)
Robert Trypuz (The John Paul II Catholic University of Lublin)
III. ONTOLOGY of MATHEMATICS and SCIENCE
Krystian Jobczyk (Université de Caen Basse-Normandie)
Marek Kuś (Centre for Theoretical Physics, Polish Academy of Sciences)
Roman Murawski (Adam Mickiewicz University in Poznań)
Jerzy Pogonowski (Adam Mickiewicz University in Poznań)
Marek Szydłowski/Paweł Tambor (Jagiellonian University)
Rafał Urbaniak (University of Gdańsk and Ghent University)
Wiesław Wójcik (Polish Academy of Sciences)
Krzysztof Wójtowicz (University of Warsaw)
Leszek Wroński (Jagiellonian University)
IV. PHENOMENOLOGICAL ONTOLOGY
Dariusz Bęben (University of Silesia in Katowice)
Arkadiusz Chrudzimski (University of Szczecin)
Filip Kobiela (University of Physical Education in Cracow)
Damian Leszczyński (University of Wrocław)
Artur Mordka (University of Rzeszów)
Marek Piwowarczyk (The John Paul II Catholic University of Lublin)
Witold Płotka (University of Gdańsk)
Marek Rosiak (University of Łódz)
V. THOMISTIC ONTOLOGY
Tomasz Duma (The John Paul II Catholic University of Lublin)
Michał Głowala (University of Wrocław)
Paweł Gondek (The John Paul II Catholic University of Lublin)
Tomasz Kąkol (University of Gdańsk)
Marek Piwowarczyk (The John Paul II Catholic University of Lublin)
Paweł Rojek (Pontifical University of John Paul II, Kraków, Poland)
Andrzej Sołtys (Rzeszów University of Technology)
Grzegorz Stolarski (Siedlce University of Natural Sciences and Humanities)
Jacek Wojtysiak (The John Paul II Catholic University of Lublin)
VI. TOPOLOGICAL ONTOLOGY
Andrzej Biłat (Warsaw University of Technology)
Rafał Gruszczyński (Nicolaus Copernicus University in Toruń)
Janusz Kaczmarek (University of Łódz)
Marek Magdziak (University of Wrocław)
Jacek Paśniczek (Maria Curie-Skłodowska University in Lublin)
Bartłomiej Skowron (Warsaw University of Technology)
Krzysztof Śleziński (University of Silesia in Katowice)