KSTL

KSTL may refer to:


 * KSTL (AM), a radio station (690 AM) licensed to St. Louis, Missouri, United States
 * The East Timor Trade Union Confederation (Konfederasaun Sindicatu Timor Lorosa'e)
 * The ICAO code for St. Louis Lambert International Airport
 * Standard Template Library for kernel-mode applications