49 out of the 50 states are represented in NCAA Division I Men's Basketball (Alaska is not). Of those 49 states, 18 were not represented in the 2012 NCAA Division I Men's Basketball Tournament. They are listed below.
- Arizona
- Arkansas
- Delaware
- Georgia
- Hawaii
- Idaho
- Illinois
- Louisiana
- Maine
- Minnesota
- New Hampshire
- New Jersey
- North Dakota
- Oklahoma
- Oregon
- Rhode Island
- South Carolina
- Wyoming