| Jiri Krechel | University of Prague | Czech Republic | April 1994 |
| Orlando Tapia | University of Uppsala | Sweden | from 1994 |
| Ian H. Williams | University of Bath | UK | from 1997 |
| Juan Bertrán | Universitat Autónoma de Barcelona | Spain | from 1998 |
| Manuel F. Ruiz-López | Universite Henri Poincaré | France | September - October 2001 |
| Amnon Kohen | University of Iowa | USA | July 2005 |
| Donald Hilvert | ETH Zurich | Swizerland | October 2005 |
| Claudio N. Alves | UFSCAR | Brazil | May 2005 – December 2006 |
| Jiali Gao | University of Minnesota | USA | July 2007 |
| Jerónimo Lameira | Universidad Federal do Parà CAPES | Brazil | June 2009 – August 2009 |
| Jon Mujika | Euskal Herriko Unibertsitatea | Spain | June 2009 |
| Arieh Warshel | University of South California | USA | February 2009 |
Visiting Researchers:
| Agnieszka Dybala | Technical University of Łódź | Poland | April 2000 |
| Magdalena Kolodziejska | Technical University of Łódź | Poland | April 2000 |
| Claudio N. Alves | UFSCAR | Brazil | February 2002 - May 2002 |
| Chin-Hsu, Tung | University of Bath | UK | April 2003 - June 2003 |
| Christo Christov | University of Sofia | Bulgaria | July 2003 - July 2004 |
| Per-Erik Larsson | University of Uppsala | Sweden | September 2003 - September 2005 |
| Juan Carlos Santos Vargas | Universidad de Chile | Chile | November 2003 - March 2004 |
| Walid Harb | Universidad Henri Poincaré | France | March 2004 - September 2004 |
| Nick Buis | University of Bath | UK | May 2004 |
| Gus Ruggiero | University of Bath | UK | May 2004 |
| Aurelièn de la Landè | Université Pierre et Marie Curie | France | September 2004 – June 2007 |
| Michal Rostkowski | Technical University of Łódź | Poland | May - June 2006 |
| Ian Greg | University of Bath | UK | July-August 2007 |
| J. Lameira Silva | Universidad Federal do Parà | Brazil | January-December 2007 |
| Katarzyna Swiderek | Technical University of Łódź | Poland | February 2009 |
| Manuel Montenegro | Univesitat Autonoma Barceolna | Spain | May - June 2007 |
| Raquel Ríos | Univesitat Autonoma Barceolna | Spain | July 2007 |
| Jerónimo Lameira | Universidad Federal do Parà | Brazil | September 2007 – August 2008 |
| Mauro Reis da Silva | Universidad Federal do Parà | Brazil | February 2009 – February 2010 |
| Jorge Isaac Ali | Univesitat Autonoma Barceolna | Spain | June 2009 |
| Zhen Wang | University of Iowa | USA | March – July 2011 |
| Marco Farren-Dai Michał Glanowski | Simon Fraser University Jerzy Haber Institute of Catalysis and Surface Chemistry Polish Academy of Sciences | Canada Poland | December 2017 – May 2018 25 March - 24 May 2019 |
| Sudeep Bhattacharyay | University of Wisconsin, Eau Claire | USA | September-December 2019 |