OTO Melara was a subsidiary of the Italian company Finmeccanica, today Leonardo,[1] active in the defence sector, with factories in Brescia and La Spezia.
It was founded in 1905 as a joint venture of Vickers and Terni Steelworks, Cantiere navale fratelli Orlando and Cantieri navali Odero.
During World War I, Vickers Terni produced many weapons with calibre 40 mm and upwards.
On 1 December 2001, the naval artillery division of OTO Melara merged with that of Breda Meccanica Bresciana to form Otobreda.
OTO Melara's land defence operations are part of the Leonardo conglomerate.