The Summer Olympics start today in Tokyo and will end on August 8. The Paralympic Games will be held from August 24 to September 5.
Athletes will compete in 33 sports at the Olympics and 22 sports at the Paralympics.
Tokyo is hosting about 11,000 athletes.
The Olympics were supposed to be held last year, but were postponed due to the coronavirus pandemic.
According to the International Olympic Committee, the Olympics, which will be held without spectators, will be "safe and secure."