Eurotherm is British supplier of control and measurement instruments for industrial and process markets. Eurotherm was founded in 1965 to manufacture temperature controllers, and later combined with Chessell and Turnbull Control Systems to form Eurotherm Limited. This new company was later acquired by Siebe PLC (later to become Invensys) in 1998, which was then acquired by Schneider Electric in 2014.

ISS provides a range of PLCs, controllers, indicators, data loggers, and software manufactured by Eurotherm.