1 Pittsburgh Steelers
The Pittsburgh Steelers are a professional American football team based in Pittsburgh, Pennsylvania, that competes in the National Football League.
Pittsburgh Steelers have won the most Super Bowls with 6 which currently stands today.
Steelers fans are everywhere! - ryanrimmel
2 Oakland Raiders
The Oakland Raiders are a professional American football franchise based in Oakland, California. The Raiders began playing in 1960 as a member club of the American Football League; they have been a member club of the National Football League since the 1970 AFL–NFL merger.
3 Boston Red Sox
The Boston Red Sox are an American professional baseball team based in Boston, Massachusetts, that competes in Major League Baseball.
4 Montreal Canadiens
The Montreal Canadiens are a Canadian professional ice hockey team based in Montreal, Quebec, that competes in the National Hockey League.
5 Manchester United
Manchester United Football Club is a professional football club based in Old Trafford, Greater Manchester, England, that competes in the Premier League, the top flight of English football.
6 New York Yankees
The New York Yankees are an American professional baseball team based in the Bronx, New York City, New York, that competes in Major League Baseball.
7 Alabama Crimson Tide
The Alabama Crimson Tide refers to the 21 men and women varsity teams that represent the University of Alabama.
I'm sorry but, they have a terrible fan base. The team is very good, but fan base, not so much. - SmashBall
8 Michigan Wolverines
The Michigan Wolverines comprise 27 varsity sports teams at the University of Michigan. These teams compete in the NCAA's Division I and in the Big Ten Conference in all sports except women's water polo, which competes in the NCAA inter-divisional Collegiate Water Polo Association.
9 Boston Celtics
The Boston Celtics are an American professional basketball team based in Boston, Massachusetts. They are specifically known for honing infamous players such as Larry Bird, Bill Russell, Paul Pierce, and more. They are also known for having the most championships in NBA History, with 17 total.
10 Dallas Cowboys
11 Chicago Bulls
The Chicago Bulls are an American professional basketball team based in Chicago, Illinois. The Bulls compete in the National Basketball Association as a member of the league's Eastern Conference Central Division. ...read more.
12 Chicago Blackhawks
13 Oklahoma City Thunder
The Oklahoma City Thunder are an American professional basketball team based in Oklahoma City, Oklahoma.
14 Detroit Red Wings
The Detroit Red Wings are a professional ice hockey team based in Detroit, Michigan. They are members of the Atlantic Division in the Eastern Conference of the National Hockey League and are one of the Original Six teams of the league.
We don't know if Red Wings fans are bandwagon or not. They've been winning for the past 30 years. We have to see if their fans are true or bandwagon when they have a bad year - DoroExploro13
15 Los Angeles Lakers
The Los Angeles Lakers are an American professional basketball team based in Los Angeles. The Lakers compete in the National Basketball Association, as a member of the league's Western Conference Pacific Division. ...read more.
16 Seattle Seahawks
The Seattle Seahawks are a professional American football franchise based in Seattle, Washington. The Seahawks compete in the National Football League as a member club of the league's National Football Conference West division.
17 St. Louis Cardinals
The St. Louis Cardinals are a professional baseball team based in St. Louis, Missouri. The Cardinals compete in Major League Baseball as a member club of the National League Central division.
18 FC Barcelona
19 Liverpool FC
20 San Francisco 49ers
The San Francisco 49ers are a professional American football team located in the San Francisco Bay Area.