Men's Division I is a set of schools and conferences that sponsor men's hockey and abide by the National Collegiate Athletic Association's rules and regulations for Division I ice hockey. There are currently six conferences that sponsor Division I hockey:

These six conferences represent all but one of the 65 teams that compete at the Division I level in men's hockey. The Arizona State Sun Devils are Division I Independents. Division I represents the highest possible level of investment in hockey, and also the highest level of competition. If a school is a Division I institution, they must compete at the Division I level in all sports. However, schools are allowed to "play up" in one sport, and several Division II and Division III schools choose to "play up" to Division I hockey.