| 2026 | 16 | Formal Ontology in Information Systems - Proceedings of the 16th International Conference (FOIS 2026), Vitória, Brazil, 21-25 September 2026 | Vitória | |
| 2025 | 15 | Formal Ontology in Information Systems - Proceedings of the 15th International Conference, FOIS 2025, Catania, Italy, September 8-12, 2025 | Catania | |
| 2025 | 15 | Proceedings of the Satellite Events of the 15th International Conference on Formal Ontology in Information Systems (FOIS 2025): Ontology Showcase, Demonstrations, and Early Career Symposium, Catania, Italy, September 10-12, 2025. | Catania | |
| 2024 | 14 | Formal Ontology in Information Systems - Proceedings of the 14th International Conference (FOIS 2024), Enschede, The Netherlands, July 2024. | Kingdom of the Netherlands | |
| 2023 | 13 | Formal Ontology in Information Systems - Proceedings of the 13th International Conference (FOIS 2023), Sherbrooke, Quebec, Canada, July 17-20, 2013 and Virtual Event, September 18-20, 2013. | Sherbrooke | |
| 2021 | | Formal Ontology in Information Systems - Proceedings of the Twelfth International Conference, FOIS 2021, Bozen-Bolzano, Italy, September 11-18, 2021 | Italy | |
| 2020 | 11 | Formal Ontology in Information Systems - Proceedings of the 11th International Conference, FOIS 2020, Cancelled / Bozen-Bolzano, Italy, September 14-17, 2020. | Italy | |
| 2018 | 10 | Formal Ontology in Information Systems - Proceedings of the 10th International Conference, FOIS 2018, Cape Town, South Africa, 19-21 September 2018 FOIS | Cape Town | 2018-09-19/21 |
| 2016 | 9 | Formal Ontology in Information Systems - Proceedings of the 9th International Conference, FOIS 2016, Annecy, France, July 6-9, 2016 FOIS | Annecy | 2016-07-06/09 |
| 2014 | | Formal Ontology in Information Systems - Proceedings of the Eighth International Conference, FOIS 2014, September, 22-25, 2014, Rio de Janeiro, Brazil FOIS | Rio de Janeiro | 2014-09-21/22 |
| 2012 | | Formal Ontology in Information Systems - Proceedings of the Seventh International Conference, FOIS 2012, Gray, Austria, July 24-27, 2012 FOIS | Gray | 2012-07-24/27 |
| 2010 | | Formal Ontology in Information Systems, Proceedings of the Sixth International Conference, FOIS 2010, Toronto, Canada, May 11-14, 2010 FOIS 2010, FOIS | Toronto | 2010-05-11/14 |
| 2008 | 31 | Formal Ontology in Information Systems, Proceedings of the Fifth International Conference, FOIS 2008, Saarbrücken, Germany, October 31st - November 3rd, 2008 FOIS | Saarbrücken | 2008-10-31 to 2008-11-03 |
| 2006 | | Formal Ontology in Information Systems, Proceedings of the Fourth International Conference, FOIS 2006, Baltimore, Maryland, USA, November 9-11, 2006 FOIS 2006, FOIS | Baltimore | 2006-11-09/11 |
| 2001 | 2 | 2nd International Conference on Formal Ontology in Information Systems, FOIS 2001, Ogunquit, Maine, USA, October 17-19, 2001, Proceedings. FOIS | Ogunquit | 2001-10-17/19 |
| 1998 | | International Conference on Formal Ontology in Information Systems FOIS | Trento | 1998-01-01 |
