Ryuk

Ryuk may refer to:
 * Ryuk (Death Note), a character in the Death Note media franchise
 * Ryuk (ransomware)
 * Ryuk (village) or Rük, a village in the Quba Rayon of Azerbaijan
 * Ryuk, a romanization for 6 in Korean numerals
 * Ryuk, a North Korean romanization for the Yook surname