The water polo competition will run between the 29 July and 12 August in the temporary water polo arena at the Olympic Park in London.
Since the 1900 Olympic Games in Paris, water polo has featured at each Olympics for men. The women's competition was introduced at the Sydney Olympics in 2000.
Eight female teams and twelve male teams now compete to win a medal in their categories.
Teams of seven players aim to score goals. The team in control of the ball has 300 seconds to try to score a goal before the ball is handed to the other team.
If you are travelling to the Water Polo Arena to see the competition, check the Olympic Park weather forecast when planning your journey.
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29 July - 12 August - Travelling to the water polo arena at the Olympic Park? Check the forecast before you set off on your journey.
The men's Great British polo team will have to play the defending Olympic champions Hungary to progress in the competition. Team GB's women's team will be in a pool with Australia who won Bronze in 2008 in Beijing.