Big Splash could refer to:

• The Big Splash (book), (1990) by Louis A. Frank and Patrick Huyghe
• The Big Splash (film), a 1935 British comedy film
• Big Splash, an alternate name for the giant impact hypothesis for the formation of the Moon
• Jo Brand's Big Splash, a British television programme
• Big Splash, a professional wrestling attack
• A Big Splash, an episode of Ninjago

• Big Splash Waterpark Canberra
• Big Splash, Singapore, a former waterpark, turned into a dining and recreation complex, demolished in 2017

• A Bigger Splash (disambiguation)