STK

STK may refer to:

Systems Tool Kit (formerly Satellite Tool Kit), an astrodynamics computer program from Analytical Graphics, Inc.
SIM Application Toolkit, a part of GSM telephony standard responsible for applications stored on SIM
Storage Technology Corporation (StorageTek), a data storage company acquired in 2005 by Sun Microsystems
SuperTuxKart, an arcade racing game
Synthesis Toolkit, a cross-platform library in C++ for sound synthesis and physical modelling
Satake Information Technology, a company of information technology with headquarters in São José do Rio Preto - SP, Brazil
FC ŠTK 1914 Šamorín, a minor Slovak football club
ST Kinetics, a Singapore-based armaments manufacturer
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