soccer, by far. here's a link http://ezinearticles.com/?Most-Popular-Sports-Around-The-World&id=551180
The Olympics are comprised of many different sports. Based upon participation the sport that is the most popular is cycling.
girls
Football also known as soccer is the most popular sport. Most sport one can think of that host world cup events mostly have world wide participation. Tennis, rugby, cricket and athletics are more examples.
soccer is the most popular
Soccer, Cricket, Basketball, Football, and Rugby are the most popular sports.
Ice Hockey is one of the most popular sports in the world. Canada and the U.S. have the most participants, with worldwide participation at more than 1.5 million people.
One of the most popular sports in the world is football, or as it is called in America, soccer. As for the most popular sports in the United States the two highest are Basketball and Football.
Soccer
Volleyball, softball and soccer.
The most popular sport world-wide is soccer (futball, football). Other popular sports include: cricket and baseball.
the most popular motor sport in the world is big bike