The Suburban Conference, formally the St. Louis Suburban Public High School Athletic and Activities Association (SPHSAAA), is a Missouri State High School Activities Association (MSHSAA) recognized high school extracurricular league, based near Creve Coeur, Missouri,^{[citation needed]} a suburb of St. Louis. The conference is one of the largest in the state, comprising 31 member schools from St. Louis County and Jefferson County.

Because of the large number of teams in the conference, the conference has historically been divided geographically into sub-conferences and divisions. Prior to the 2014–15 school year, there were four conferences: Suburban East, Suburban North, Suburban South and Suburban West.^[1]

In 2018, the St. Louis Suburban Public High School Athletic and Activities Association re-aligned their conferences into various pools by sport. This decision essentially made the existing sub-conferences and divisions irrelevant, as a given school competes against a different pool of schools in each sport. For purposes of athletic competition, pool assignments are based on the following factors: athletics offered, competitive balance, competitive trends, diversity, and school size. The number of pools varies from two (boys volleyball) to five (football), depending on the sport, with most sports having three or four pools.^[2] Pools may be realigned if one or more of the previously mentioned standards are not met.

Member schools are listed in alphabetical order.

The Suburban Conference has some historic rivalries between its schools, but also those that are generally unknown outside the community.

(Note: most of the following information mainly applies to football. The intensity of these rivalries, and their rivalries in general, can vary by sport.)