Major Conventions held/to be held in Hiroshima
| year | Name | Participants |
|---|---|---|
| 2025 | 80th Annual Meeting(2025),The Physical Society of Japan | 5,000 |
| World Association of Lesson Studies International Conference 2025 -WALS2025- | 800 | |
| The 6th Asian Congress of Radiation Research (ACRR 2025) / The 68th Annual Meeting of the Japanese Radiation Research Society | 600 | |
| 63rd Pugwash Conference, Hiroshima | 400 | |
| 2024 | 83rd National Industrial Safety and Health Convention 2024 in Hiroshima | 10,000 |
| 30th International Conference on Health Promoting Hospitals and Health Services | 811 | |
| IEEE Asian Solid-State Circuits Conference (A-SSCC 2024) | 504 | |
| The 20th International Symposium on Silicon Chemistry (ISOS-20) | 407 | |
| 2023 | Japan Society of Civil Engineers 2023 Annual Meeting | 14,824 |
| The 5th International Cellulose Conference (ICC2022+1) | 542 | |
| G7 Hiroshima Summit | 2,983 | |
| 2022 | The 35th Annual Meeting of the Japanese Society for Radiation Oncology | 2,820 |
| World Conference on Computers in Education (WCCE) 2022 | 366 | |
| 25th IUPAC International Conference on Physical Organic Chemistry (ICPOC 25) | 261 | |
| 2021 | The 101st Congress of the Japan Gastroenterological Endoscopy Society | 1,100 |
| The 76th Annual Meeting of The Japan Society of Coloproctology | 1,000 | |
| GA2LEN UCARE Urticaria Conference 2021 | 102 | |
| 2020 | The 79th Annual Meeting of the Japanese Cancer Association | 870 |
| The 23rd Annual Scientific Meeting of Japan Society of Assisted Reproduction | 270 | |
| IEEE International Symposium on Radio-Frequency Integration Technology (RFIT2020) | 80 | |
| 2019 | The 58th Orient and South East Asia Lions Forum(OSEAL) | 12,005 |
| SICE Annual Conference 2019 | 660 | |
| 19th International Conference on Solid State Dosimetry (SSD19) | 333 | |
| 2018 | The 117th Annual Meeting of the Japanese Dermatological Association | 5,966 |
| 2018Joint ISAF-FMA-AMF-AMECPFM Conference in HIROSHIMA (IFAAP2018) | 1,200 | |
| The 25th International Congress on Sound and Vibration (ICSV25) | 914 | |
| 2017 | AIJ Annual Convention 2017 | 10,308 |
| 69th Annual Congress of the Japan Society of Obstetrics and Gynecology | 7,150 | |
| International Behavioral Neuroscience Society (IBNS) 26th Annual Meeting | 312 | |
| 2016 | 65th JCI Japan National Convention 2016 Hiroshima | 15,100 |
| G7 Hiroshima Foreign Ministers' Meeting | 650 | |
| 34th Annual Meeting of the International Society of Blood Purification (ISBP2016) | 400 | |
| 2015 | STROKE2015 | 6,000 |
| 23rd World Scout Jamboree Hiroshima Peace Programme | 4,000 | |
| The 13th World Telecommunication/ICT Indicators Symposium (WTIS 2015) | 840 |
*Includes meetings scheduled to be held.