Riku

Riku is a Finnish and Japanese given name:

 Riku (singer) (born 1988), Australian R&B/Hiphop singer
 Riku (Kingdom Hearts), fictional character from the Kingdom Hearts video game series by Disney and Square Enix
 Riku Hahl (born 1980), Finnish NHL hockey player
 Riku Harada, fictional character from the anime and manga D.N.Angel
 Riku Helenius (born 1988), Finnish NHL hockey player
 Riku Kiri (born 1963), Finnish sportsman
 Riku Kitazawa, fictional character from the manga Gravitation EX
 Riku Lätti (born 1973), South African singer, songwriter and writer
 Riku Sanjo (born 1964), Japanese mangaka
 Rikku (or Ryukku) (リュック) — a video game character from Final Fantasy X