• the surname of Grace Nono, female vocalist from the Philippines
• the surname of Luigi Nono, Italian composer
• the nickname of Norbert Krief, French rock guitarist
• the nickname of Nozomi Tsuji, Japanese singer
• the Italian form of the name of Pope Pius IX, Pio Nono

No-No or Nono are characters in the anime series:

• Diebuster (Nono)
• Hitohira (Nono Ichinose)
• Ulysses 31 (No-No)
• Popotan (Nono)

Noo-Noo is a character in the TV series

• Teletubbies