"Subaru Users Meeting FY2023" at Mitaka, Japan (2024; SOC)

"HSC-AGN collaboration meeting" at Ehime, Japan (2023; S/LOC)

"Barcelona High-z Quasar Workshop" at Barcelona, Spain (2023; SOC)

"COSPAR-22 symposium on high-z supermassive black holes" at Athens, Greek (2022; SOC)

"すばる20th国際会議" at Waikoloa, Hawaii (2019 Nov; SOC AGN chair)

"Cosmic Evolution of Quasars: from the First Light to Local Relics" at Peking University (2019 Oct; SOC)

"活動銀河核ワークショップ2015 〜すばるPFSの登場に向けて〜" at Mitaka (2015 May; chair)

"活動銀河核ワークショップ 〜2020年代への展望〜" at Mitaka (2014 Apr; chair)

"Final International Symposium of Nagoya University GCOE Program QFPU" at Gifu (2013 Mar; LOC)

"Legacy of AKARI: A Panoramic View of the Dusty Universe" at Jeju, Korea (2012 Feb; LOC)

"光学赤外線波長における宇宙背景放射" at Toyohashi (2011 Dec; Chair)

"宇宙可視光背景放射" at Sapporo (2010 Aug)

"Multi-Phase Interstellar Medium and Dynamics of Star Formation" at Nagoya (2010 Feb; LOC)