Maire Tecnimont is an Italian corporate group active in the engineering, technology, and energy sectors, with specific expertise in plant engineering (particularly in the hydrocarbons sector), green chemistry, and the development of technologies for energy transition. The group was formed by bringing together the engineering divisions of the industrial groups Edison, Montecatini, and Fiat.

Maire consolidated between 1983 and 2004, and after a period of acquisitions, it was listed on the Milan Stock Exchange in the FTSE Italia Mid Cap index since November 2007. Starting from 2008, it expanded internationally. Since 2016, Maire Tecnimont has initiated a new phase focused on the digital transformation of its production processes and the opening towards new businesses such as renewable energy.

Currently, the Maire group is present in about 45 countries, controls around 50 operating companies, and has a workforce of nearly 6,000 employees, with about half located abroad.