Matsui
The taxon authority Matsui may refer to:
- Ichiro Matsui, Japanese lepidopterist
- Masafumi Matsui (born 1950), Japanese herpetologist
- Takaji Matsui (1925–2014), Japanese herpetologist
- Tetsuo Matsui (fl. 1967), Japanese ichthyologist
- Yuki Matsui (fl. 2021), Japanese entomologist