A long-time member of the North Central Conference, UNO joined the Mid-America Intercollegiate Athletics Association on July 1, 2008 after the NCC ceased operations. In March 2011, the school announced its intentions to move from Division II to Division I and join The Summit League. In the process it would abandon its football and wrestling programs to better fit with the sports sponsored by The Summit League and to maintain Title IX compliance. Wrestling had been the school's most successful sport with national championships in 1991, 2004, 2005, 2006, 2009, 2010 and 2011. Football also had a long, successful history with multiple conference championships and several NCAA Division II tournament appearances. Marlin Briscoe, first black starting quarterback in modern American professional football, attended and played for UNO from 1964–1967. Former Maverick football players currently playing in the NFL include names such as Zach Miller, Kenny Onatolu and Greg Zuerlein. As part of its Division I move, Omaha added men's soccer and men's golf, both of which are sponsored by The Summit League. Hockey moved to the new NCHC starting with the 2013-14 season. In the 1975 AIAWWomen's College World Series, the Maverettes softball team defeated Northern Iowa, 6–4, in the deciding game, led by pitcher Pat Linson to earn the university's first team national championship. In 1969–1979, the team played in ten of the first eleven Women's College World Series ever held, missing only in 1974. The women's soccer and softball teams have won NCAA's Division II national championships, as had the wrestling team, who were seven-time national champions.
The Omaha men's basketball team is led by head coach Derrin Hansen, and also moved into Baxter Arena starting in 2015–16. They transitioned from Division II to Division I beginning in the 2011–12 season. The 2015–16 season is the first in which they are eligible for NCAA-sponsored postseason play. The Mavericks' all-time record is 1,087–1,083. Omaha won regular season North Central Conference championships in 1979, 1984, 2004, and 2005.
Wrestling
Wrestling has also been a top sport for the Mavericks, winning the Division II championships in 1991, 2004–2006 and 2009–2011. However, in 2011 Trev Alberts made the decision to disband the wrestling team only a few hours after it had won its third consecutive NCAA team title in order for Omaha to transition to NCAA Division I. Head coach Mike Denney and a number of his wrestlers later transferred to Maryville University to start a Division II team.
Wrestling – 1991, 2004, 2005, 2006, 2009, 2010, 2011
∗ Association for Intercollegiate Athletics for Women Women's College World Series
Previous mascots and team names
Before 1939, UNO teams were known as the Cardinals. From 1939 to 1971, the UNO teams were the Indians; the mascot at this time was a Native American named Ouampi. In The Native Peoples of North America: A History, the mascot is described as "so tacky by comparison that he made the Cleveland Indians' Chief Wahoo look like a real gentleman." The switch to "Mavericks", the current team name, occurred in the summer of 1971. A resolution, passed by an 18–7 vote of the student senate, a 27–0 vote of the university senate, and approved by the university president, called for UNO to "discontinue use of the name 'Indian' for its athletic teams, abolish "Ouampi" as a school mascot and end the misuse of the Native American culture at university activities, such as homecoming and Ma-ie Day.