about 6 times
Louisville has appeared in the NCAA Tournament 37 times.
The University of Illinois has been the the tournament 25 times - the first being in 1942 and the last of course this year. So far they have not won the Championship...four times they have gone to the Final Four (1949, 1951, 1952, and 1989) and their tournament record is 29 wins and 24 losses.
Louisville's 2013 appearance marks its 39th time in the tournament, which is the 5th most appearances.
Duke University (86,88,89,90,91,92,94). They won the tournament in 1991 and 1992.
Brigham Young University has made 22 NCAA Tournament appearances without advancing to the final four. This is as of the end of the 2007 season.
Including the 2012 NCAA Tournament: Brigham Young University has made the Tournament 28 times and has never made it to the Final Four. Missouri is second, with 26 appearances without ever making the Final Four. Xavier, which so far has won in the 2012 tournament as this is being written, is third with 22 years without an appearance.
The University of Kentucky defeated UTAH in 1998 to secure its 7th and last national title in basketball
1975 Kentucky and Louisville were on opposite sides fo the bracket. UCLA defeated Louisville and then Kentucky to claim the NCAA Title. Early 1960's Cincinnati played Ohio State several times in the Final Four
Including the 2008 NCAA Men's Basketball Tournament, the University of Kentucky has 17 consecutive appearances. Their current streak began with the 1992 tournament, and is currently the third longest active streak behind Arizona (24) and Kansas (18). Duke University is fourth on the list with 13 consecutive appearances.
once
The Indiana University Hoosiers are in the 2013 tournament and also were in the 2012 tourney. The team's most recent appearance in the Final Four was in 2002 when it lost in the title game to Maryland 64-52. Including the 2013 appearance, The Hoosiers have been in the tournament 37 times (tied with Duke for sixth most appearances) and have been in the Final Four eight times, winning five championships. The only title game the Hoosiers have lost was in 2002.
Five.