Nasu may refer to:

• Nasu people, an ethnic group in China
• New American Standard Bible Update
• Nasu (那須), a traditional name for a region in northern Tochigi Prefecture, Japan. It is also in the names of several places:
  • Nasushiobara, Tochigi, a city
  • Nasukarasuyama, Tochigi, a city
  • Nasu, Tochigi, a town
  • Nasu District, Tochigi
  • Nasu Highlands, an open area
  • Nasu Mountains, volcanic peaks in the region
  • Nasushiobara Station, a railway station takes its name from the region
• Nasu (茄子 or ナス), the Japanese word for eggplant
  • Nasu (manga), a 2000 manga series authored by Iou Kuroda
  • Nasu: Summer in Andalusia, a 2003 animated film adapted from Nasu
• Jinyu Nasu (那須 甚有, born 1999), Japanese footballer
• Kinoko Nasu (born 1973), Japanese author, co-founder of TYPE-MOON
• Sisu Nasu, military all-terrain transport vehicle of Finnish origin
• Nasu (Zoroastrianism), a term meaning unclean and negative in Zoroastrianism
• Nasu language, a Loloish language spoken by Yi people of China
• National Academy of Sciences of Ukraine