Leonardo S.p.A., formerly Leonardo-Finmeccanica and Finmeccanica, is an Italian multinational company specialising in aerospace, defence and security.

On 1 January 2016, Leonardo-Finmeccanica became a single industrial company by integrating the activities of its subsidiaries AgustaWestland, Alenia Aermacchi, DRS Technologies, Selex ES, Oto Melara and WASS.

The company is organised into five divisions (Helicopters, Aircraft, Aerostructures, Electronics, Cybersecurity) and is also the parent company and corporate centre for the subsidiaries and joint ventures, Telespazio, Thales Alenia Space, MBDA and ATR.

Leonardo is listed on the Borsa Italiana and is a constituent of the FTSE MIB and Dow Jones Sustainability Indices.