The Greater Kansas City Suburban Conference (GKCSC) is a high school athletic conference comprising large to mid-size high schools located in the greater Kansas City, Missouri metro area. The conference members are located in Buchanan, Cass, Clay, Jackson, and Platte counties.

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The GKCSC is divided into sub-conferences, based on school size, and is re-structured on a regular basis to account for changes in enrollment. As of the 2023-24 school year, there are five conferences, with gold being the largest schools, and silver,red, white and blue conferences in descending order of enrollment^[1]