Nagai (written: 永井 lit. eternal well or 長井 lit. "long well") is a Japanese surname. Notable people with the surname include:
- Fujio Nagai (永井 希仁男, 1951–2007), Japanese boxer
- Go Nagai, Japanese manga artist
- Hazuki Nagai (born 1994), Japanese field hockey player
- Hina Nagai (長井 陽菜, born 2003), a member of K-Pop girl group, LIGHTSUM
- Jordan Nagai (born 2000), American former voice actor
- Jun Nagai (born 1944), Japanese middle-distance runner
- Kafū Nagai, Japanese novelist, playwright, essayist, and diarist
- Kenji Nagai, Japanese journalist, killed in Myanmar
- Kensuke Nagai, Japanese footballer
- Koji Nagai, Japanese businessman, CEO of Nomura Holdings
- Michiko Nagai, Japanese writer
- Mitsuya Nagai (長井 満也, born 1968), Japanese mixed martial artist, kickboxer and professional wrestler
- Ryo Nagai, Japanese footballer
- Shunta Nagai (永井 俊太, born 1982), Japanese footballer
- Takashi Nagai, Japanese radiologist and Catholic writer
- Tatsuo Nagai, Japanese writer
- Yasutomo Nagai (1965–1995), Japanese motorcycle racer
- Yuri Nagai (born 1992), Japanese field hockey player
This page lists people with the surname Nagai.
If an internal link intending to refer to a specific person led you to this page, you may wish to change that link by adding the person's given name(s) to the link.
If an internal link intending to refer to a specific person led you to this page, you may wish to change that link by adding the person's given name(s) to the link.