116 national championships since 1895 in football. However most teams don't count their national championship pre ww2!
You might wish to rephrase and narrow the question. As it reads now, it is wide open and could refer to any team in any sport at any time in history. One might assume that, since the question is asked under the heading of 'football history' that it refers to a football championship. But the question remains, 'Championship of what?' Do you mean championship of the National Football League? Professional leagues that pre-dated the NFL? College football? Canadian football? We are not mind-readers. Please give some thought to a question before asking it.
Prior to the AFL-NFL merger, the Minnesota Vikings had 1 championship. Since the merger the Vikings have had 3 Superbowl appearances in 1973, 1974, and 1976.
USC is the winningest football school since 2001
No one, as that team did not exist. The College of Charleston has not fielded a football team since the early 1900s.
I am assuming that by "championships in pro sports", we are referring to the NBA, NFL, NHL and MLB. Since the NFL is the youngster here all of it's teams can be eliminated immediately. In the NBA, Boston has 21 championship appearances winning 17. The Lakers have 31 championship appearances but have only won 15 of those. ( +1 to the winner of the current series). The NHL is dominated by Montreal with 34 championship appearances, winning 24 of those. But the most championship appearances by any pro sports team is 40 by the New York Yankees who have won 27 championships.
Yes, but not since the BCS has been involved