Almost 4 billion people will be tuned to the World Cup over the next few weeks.
Wales - of course aren't in the competition - but there's always England to support...
Tom Sheldrick went out to find out how excited people in Wales are for what's known as the greatest show on Earth.
More top news
A mostly cloudy and murky day with widespread hill fog and outbreaks of rain.
Official figures show areas of Caerphilly, Rhyl, Wrexham, Rhondda Cynon Taf and Bridgend to be the most deprived in Wales.
A £500 million investment has been secured for a new riverside development in Cardiff, which would link the City Centre with Cardiff Bay.