College basketball is basketball that is played by teams of student-athletes at universities and colleges. In the United States, colleges and universities are governed by collegiate athletic bodies, including the National Collegiate Athletic Association (NCAA), the National Association of Intercollegiate Athletics (NAIA), the United States Collegiate Athletic Association (USCAA), the National Junior College Athletic Association (NJCAA), and the National Christian College Athletic Association (NCCAA). These national affiliation organizations may be subdivided into divisions, generally based on the number and level of scholarships that may be provided to the athletes. Institutions that play in Division II of the NCCAA are typically small Bible colleges. Some institutions may have multiple affiliations with the most common being USCAA and NCCAA. The NCAA does not allow this. An institution does not need to join a national affiliation orginaization to play college basketball, but this is very rare. As of 2025, Cheyney, a former NCAA member, fields a team with no national affiliation.
Each affiliation organization comprises conferences into which the vast majority of teams are divided. Traditionally, the location of a school has been a significant factor in determining conference affiliation. The bulk of the games on a team's schedule during the season are against fellow conference members. Therefore, geographic proximity of conference members allows local rivalries to develop and minimizes travel costs. Further, televised road games played in the same time zone as that of the visiting team's fans tend to draw larger audiences, which enhances the value of the media rights.