Rui

Rui or RUI may refer to:

Names

 * Rui (surname) (芮), a Chinese surname
 * Rui (given name), a given name

Places

 * Rui (state) (芮), a Chinese state during the Zhou Dynasty
 * Rui (village), a census town in Kolhapur district, Maharashtra, India.
 * Royal University of Ireland

In fiction

 * Rui, a character played by actor Luiz Fernando Guimarães in the popular Brazilian sitcom Os Normais and its spin-off films
 * Rui (累), a character in the Japanese anime/manga series Demon Slayer: Kimetsu no Yaiba
 * Ruy Blas, a tragic drama by Victor Hugo
 * Rui Kamishiro, a character in the Japanese video game series Project Sekai
 * Rui Yoshii (吉井るい), a minor character in the Japanese anime series Soaring Sky! Pretty Cure
 * Hanazawa Rui, a character in the Japanese manga series Boys Over Flowers
 * Ninomiya Rui, a character in the Japanese anime Gatchaman Crowds
 * Yashio Rui, a character in the Japanese multimedia project BanG Dream!

Species

 * Rui fish, a common name for Labeo rohita
 * Rui tree, a common name for Calotropis gigantea

Other

 * Radio Ukraine International, is a Ukrainian national worldwide radio broadcasting service
 * Russell 1000 Index, stock market index with trading symbol ^RUI