| 2/3 | JAPAN NANO 2023 | Tokyo Big Sight |
| 2/22 | 2/24 | PHOTOPTICS 2023 | the Lisbon Marriott Hotel |
| 3/4 | 3/5 | pLED International Symposium 2023: Exploring Invisible Light Technology | Keyaki Hall |
| 4/3 | 4/5 | International Workshop on Holography and related technologies (IWH2022) | Conference Center |
| 4/18 | 4/21 | 12th Laser Display and Lighting Conference | Pacifico Yokohama |
| 4/19 | 4/21 | OPTICS & PHOTONICS International Exhibition 2023 (OPIE’23) | パシフィコ横浜 |
| 4/19 | 4/21 | 2023 International Conference in Electronics Packaging (ICEP2023) | Civic Auditorium Sears Home Yume Hall |
| 5/14 | 5/17 | The 8th ULSIC vs. TFT conference | Sapporo |
| 5/15 | 5/19 | IEEE International Magnetics Conference 2023 | SENDAI INTERNATIONAL CENTER |
| 6/5 | 6/8 | The 9th International Symposium on Organic and Inorganic Electronic Materials and Related Nanotechnologies (EM–NANO2023) | Ishikawa Industrial Promotion Center |
| 6/11 | 6/16 | 2023 Symposium on VLSI Technology and Circuits | リーガロイヤルホテル京都 |
| 6/27 | 6/30 | The 40th International Conference of Photopolymer Science and Technology Materials & Processes for Advanced Lithography, Nanotechnology and Phototechnology | Makuhari Messe |
| 7/4 | 7/7 | 2023 The 30th International Workshop on Active–Matrix Flatpanel Displays and Devices —TFT Technologies and FPD Materials— (AM–FPD'23) | Ryukoku Unv. |
| 7/23 | 7/28 | The 31st International Conference on Photochemistry (ICP2023) | Sapporo Park Hotel |
| 7/26 | 8/3 | International Cosmic Ray Conference (ICRC2023) | Osaka International Convention Center, Osaka, Japan |
| 7/30 | 8/4 | 26th IUPAC International Conference on CHEMICAL THERMODYNAMICS (ICCT–2023) | Senri Life Science Center |
| 8/20 | 8/23 | The 52nd International Congress and Exposition on Noise Control Engineering
(INTER–NOISE 2023) | Makuhari Messe |
| 9/3 | 9/8 | 21st International Conference on Radiation Effects in Insulators (REI–21) | Kyushu University |
| 9/5 | 9/8 | International Conference on Solid State Devices and Materials 2023 | 名古屋国際会議場 |
| 9/17 | 9/21 | The 19th International Conference on Chiroptical Spectroscopy | JMSアステールプラザ |
| 9/17 | 9/22 | The 21st international conference on Solid–State Protonic Conductors (SSPC–21) | Nishijin Plaza |
| 9/24 | 9/27 | 28th Microoptics Conference (MOC2023) | Seagaia Convention Center (Miyazaki) |
| 9/25 | 9/29 | The 14th International Vacuum Electron Sources Conference (IVESC 2023) | University of Tsukuba |
| 9/25 | 9/30 | ITC Fukuoka 2023
(9th International Tribology Conference, Fukuoka 2023) | Fukuoka International Congress Center |
| 10/1 | 10/5 | International Conference on Extreme Ultraviolet Lithography 2023, SPIE PhotomaskTechnology + Extreme Ultraviolet Lithography | Monterey Conference Center |
| 10/7 | 10/13 | 26th International Conference on Ion Beam Analysis & 18th International Conference on Particle Induced X–ray Emission | 富山国際会議場 |
| 10/11 | 10/13 | ADMETA Plus 2023 | 東京大学
浅野キャンパス
武田ホール |
| 10/23 | 10/25 | 2023 International Workshop on DIELECTRIC THIN FILMS FOR FUTURE ELECTRON DEVICES
—SCIENCE AND TECHNOLOGY— (IWDTF2023) | 金沢商工会議所会館 |
| 11/6 | 11/8 | Faraday Discussion on Challenges and prospects in organic photonics and electronics | OSAKA CITY CENTRAL PUBLIC HALL |
| 11/7 | 11/9 | The 43rd Annual NANO Testing Symposium | Senri Life-Science Center |
| 11/9 | 11/10 | MANA International Symposium 2023 | National Institute for Materials Science |
| 11/12 | 11/16 | 2023 Joint Symposium on Molten Salts (MS12) | Kyoto Garden Palace |
| 11/12 | 11/17 | 14th International Conference on Nitride Semiconductors (ICNS–14) | Hilton Fukuoka Sea Hawk |
| 11/13 | 11/15 | The 44th Symposium on UltraSonic Electronics | 富山国際会議場 |
| 11/13 | 11/17 | HYPERFINE2023 | Nara Kasugano International Forum IRAKA |
| 11/16 | 11/17 | IMFEDK 2023 (The 2023 International Meeting for Future of Electron Devices, Kansai) | 龍谷大学 |
| 11/19 | 11/22 | International Symposium on Imaging, Sensing, and Optical Memory 2023 | TAKAMATSU SYMBOL TOWER |
| 11/20 | 11/22 | 34th 2023 International Symposium on Micro–NanoMechatronics and Human Science (MHS2023) | Nagoya University |
| 11/20 | 11/24 | 28th International Conference on Optical Fiber Sensors | Hamamatsu act city |
| 11/21 | 11/22 | The 44th International Symposium on Dry Process (DPS2023) | Winc Aichi |
| 11/28 | 11/30 | The 36th International Symposium on Superconductivity (ISS2023) | Tākina Wellington Convention and Exhibition Centre |
| 11/29 | 12/1 | 13th International Symposium on Environmentally Conscious Design and Inverse Manufacturing (EcoDesign2023) | Nara Prefectural Convention Center |
| 12/5 | Materials Innovation Strategy Symposium 2023 (MatISS 2023) | Hitotsubashi Hall |
| 12/5 | 12/7 | International Workshop on Holography and related technologies (IWH2022&2023) | 福州，中国 |
| 12/6 | 12/8 | The 30th International Display Workshops (IDW '23) | TOKI MESSE Niigata Convention Center |
| 12/11 | 12/16 | The 3rd Materials Research Meeting (MRM2023)
The 24th IUMRS–International Conference in Asia (IUMRS–ICA2023) | Kyoto International Conference Center |
| 12/13 | 12/15 | SEMICON Japan | Tokyo Big Sight |
