The answer to this question is tricky. There are several different 'titles' that have been won since universities began competing in sports. There are NCAA titles which go back several decades (sorry, I do not know the history of the NCAA, but they have a website: ncaa.com). The NCAA gives out 'titles' to teams and to individuals. There have been other institutions before the NCAA that gave out 'titles' to universities. The only definitive answer that I know of, is based on NCAA team titles. UCLA has won 104 team titles with Stanford and USC in second and third with fifteen-to-twenty less team titles.
Ucla (UCLA)
PAC 10, by far
SEC in football
UCLA has 11 National Championships in Basketball
UCLA has the most NCAA titles
The Alabama Crimson Tide have won the most NCAA Football Titles The UCLA Bruins have won the most NCAA Basketball Titles The USC Trojans have won the most NCAA Baseball Titles In Women's NCAA Basketball the Connecticut Lady Huskies have the most NCAA Basketball Titles
The UCLA Bruins have the most NCAA Championships, with 11 total titles, among all schools.
They have won 50 national titles - that makes them 4th in line for the most national titles won!
According to their respective websites: Harvard has 39 sports Ohio State has 36 teamsPrinceton has 36 teamsStanford has 35 teams
With 11 national titles, UCLA holds the record for the most NCAA Men's Division I Basketball Championships.
UCLA with 11 titles.