One of the most common complaints about boxing is that there are far too many championship belts. For the casual fan, it's impossible to keep track of them or know how significant any given promotional trinket actually is. Even for somebody like me, who spends a lot of time watching, researching and writing about the sport, it can still get very confusing.
The situation is made worse by the promotional organizations themselves, who will sometimes free up their "world championship" belt by naming their current champion a "super" or "diamond" champion, or else organize "interim championship" fights in weight classes where their current champion isn't even inactive.
So it's not surprising that so many boxing fans, writers and commentators more or less ignore them, instead focusing on specific match ups and individual rankings from important publications like The Ring.
But it is going too far to say that promotional belts are completely meaningless. It's important to remember that just because a fighter is wearing a belt that says he is the world champion does not mean he is actually the best fighter his weight in the world-he might not even be in the top five.
But in a sport as wide open as boxing, it still serves as some sort of a touch stone. You don't get one of those belts without being an elite athlete and legitimately talented boxer.
Some of the fighters on this list have held belts of various kinds. I am defining "title belt" as the world championship as recognized by one of the four major promotional organizations-either the WBC, WBA, WBO or IBF.