Clock Tower 3 is a PlayStation 2 survival horror game and the fourth installment in the Clock Tower series. It was developed by Capcom Production Studio 3 and Sunsoft, and published by Capcom on December 12, 2002 in Japan, on March 18, 2003 in North America and on June 25, 2003 in Europe.

The story revolves around a girl named Alyssa Hamilton who seems to time travel to the past by entering realms. In these realms, she is hunted by psychopathic and sadistic serial killers. Along the way, she discovers dark truths about her familial history, and brings peace to tormented victims beyond the grave. The game is set in 2003 in London, England. During the game, Alyssa will explore a mansion, ruined city, concert hall, underground factory and sewers, cemetery, abandoned hospital, and a castle with a clock tower.

The plot is a side story loosely connected to the history of the Barrows/Burroughs family from Clock Tower: The First Fear and Clock Tower, through the perspective of the Hamilton family, and there are no references to Jennifer Simpson, Helen Maxwell, the incidents in Norway, etc. Because of nature of the self-contained story, Clock Tower 3 is a stand-alone installment and one does not need to play previous games in the series in order to comprehend Clock Tower 3.

Gameplay involves exploring and finding clues, while avoiding the serial killers who are stalking Alyssa, like a deadly game of hide-and-seek.