Thermocouple, NTC thermistor, and PTC thermistor manufacturers are listed below. This list is based on linecards of electronics component manufacturers, and distributors as of 2010.

Advanced Thermal Products (http://www.atpsensor.com/)
Ametherm Inc. (http://www.ametherm.com/)
Betatherm (http://www.betatherm.com/)
EPCOS (http://www.epcos.com/)
MMC Electronics America Inc. (http://www.mmea.com/)
Murata Electronics (http://www.murata.com/)
Nichicon USA (http://www.nichicon-us.com/)
NIC Components Corp (http://www.niccomp.com/)
Pico Tech (http://www.picotech.com/)
Precision Measurement Engineering (http://www.pme.com/)
Precon, Inc. (http://www.preconusa.com/)
Quality Thermistor, Inc. (http://www.thermistor.com/)
SEI Electronics, Inc (http://www.seielect.com/)
Selco Products Co..(http://www.selcoproducts.com/)
Sensor Scientific Inc. (http://www.sensorsci.com/)
Spectrum Control (http://www.specsensors.com/)
Thermik (http://www.thermodisc.com/)
Thermometrics (http://www.thermometrics.com/)
US Sensors Corp. (http://www.ussensor.com/)
Vishay (http://www.vishay.com/)
Western Electronic Component Corp (http://www.wecc.com/)