There are 21 professional soccer leagues around the world. The biggest of these is the International Football League, which bases participation on a per-country basis.
The list of professional soccer leagues is as follows:
A-League Australian Football
Bundesliga
Football League Championship
Eredivisie
Indian League
International Football
La Liga
League One
League Two
Ligue 1
Major League Soccer
North American Soccer League
Portuguese Liga
Premier League
Primera Division Argentina
Russian Premier League
Scottish Premiership
Segunda Division
Serie A
Superleague Greece
UEFA Champions League
The league in the United States is Major League Soccer (MLS), and it is ranked seventh in popularity among the world's leagues.
