Nagaoka

Nagaoka may refer to:

• Nagaoka, Niigata, Japan
• Nagaoka-kyō, the capital of Japan from 784 to 794
  • Nagaokakyō, Kyoto, Japan, a city at the location of Nagaoka-kyō
• Izunagaoka, Shizuoka, Japan, a former town in Izu Peninsula

• Go Nagaoka (長岡 郷; born 1984), Japanese footballer
• Hantaro Nagaoka (長岡 半太郎; 1865–1950), Japanese physicist responsible for the 1904 "Saturnian" model of atomic structure
• Masaru Nagaoka (長岡 勝; born 1962), Japanese ski jumper
• Moeko Nagaoka (長岡 萌映子; born 1993), Japanese women's basketball player
• Miyu Nagaoka (長岡 望悠; born 1991), Japanese volleyball player
• Shusei Nagaoka (長岡秀星; born 1936), Japanese illustrator
• Yayoi Nagaoka (長岡 弥生; born 1974), Japanese speed skater
• Yūya Nagaoka (長岡 裕也; born 1985), Japanese shogi player

• Nagaoka (crater), a lunar crater named after Hantaro Nagaoka