Sharku may mean:

• Saruman, a character in J. R. R. Tolkien's novel The Lord of the Rings, called Sharkû by the Orcs
• Sharku, warg-rider chief orc in Peter Jackson's film The Lord of the Rings: The Two Towers and the game The Lord of the Rings: The Battle for Middle-earth II

• Je ne sais pas pourquoi
• Jenette Goldstein
• Jenever
• Jeney
• Jenga
• Jenghis Khan
• Jenghiz Khan
• Jengish Chokusu
• J. englishman
• Jengou
• Jengu
• Jenifer Alcorn
• Jenifer Lewis
• Jenilee Harrison
• Jenin
• Jenin Massacre
• Jenin massacre
• Jenisch
• Jenische
• Jenison
• Jenison, MI
• Jenison, Michigan
• Jenkins
• Jenkins activity survey
• Jenkinsburg