A new administration members of IMSS started April 1st, 2019.
| Institute of Materials Structure Science | Director | KOSUGI, Nobuhiro |
| Deputy Director | SETO, Hideki | |
| Deputy Director | ADACHI, Shin-ichi | |
| SR Science Division Ⅰ | Head | AMEMIYA, Kenta |
| SR Science Division Ⅱ | Head | SENDA, Toshiya |
| Neutron Science Division | Head | OTOMO, Toshiya |
| Muon Science Division | Head | MIYAKE, Yasuhiro |
| Photon Factory | Head | FUNAMORI, Nobumasa |
| Slow Positron Facility | Acting Head | KOSUGI, Nobuhiro |
| Structural Biology Research Center | Head | SENDA, Toshiya |
| Condenced Matter Research Center | Head | KADONO, Ryosuke |
