Termignon (Savoyard: Trémyon) is a former commune in the Savoie department in the Auvergne-Rhône-Alpes region in south-eastern France. On 1 January 2017, it was merged into the new commune Val-Cenis. It is ideally located in the Maurienne region with good transport links in and out of Modane, Lyon, Geneva and Chambéry.

Termignon has a humid continental climate (Köppen climate classification Dfb). The average annual temperature in Termignon is 7.4 °C (45.3 °F). The average annual rainfall is 659.1 mm (25.95 in) with November as the wettest month. The temperatures are highest on average in July, at around 16.5 °C (61.7 °F), and lowest in January, at around −1.5 °C (29.3 °F). The highest temperature ever recorded in Termignon was 34.7 °C (94.5 °F) on 27 June 2019; the coldest temperature ever recorded was −27.4 °C (−17.3 °F) on 3 February 1956.

The famous but rare and expensive Bleu de Termignon cheese is made in Termignon.