Edmund Henry (E.H) Horne, (February 13, 1865 – March 15, 1953) was a Canadian businessman and prospector. He was most famous for being the founder of Noranda, a mining and metallurgy company originally from Rouyn-Noranda, Quebec, Canada.
Edmund Horne was born in Enfield, Nova Scotia to Catherine (MacDonald) and Leonard Horne. He was a great-grandson of Jacob Horn who is rumoured to have fought at the battle at the Plains of Abraham. (Jacob Horn was granted land in Eastern Passage, Nova Scotia. Jacob's son, Andrew Philip Horne, brought his family to settle at the eastern side of Shubenacadie Grand Lake which would become known as Horne Settlement and later Enfield.)
Horne worked for several years learning the trade in the gold mines of Renfrew, Nova Scotia and Oldham near his home in Nova Scotia. He then went to Colorado, and then to the gold camps of British Columbia and California. In 1908, Horne caught wind of the silver discoveries in Cobalt, Ontario and travelled back to the area.
He was first attracted by the general rock structure of the Rouyn area in 1911. Results of three subsequent trips to the Quebec township proved disappointing, but had the tenacity and prospector's instinct that refused to be downed. As a consequence in 1920 he succeeded in forming a syndicate to finance the staking and development of the present 600-acre (2.4 km2) area. The series of operations culminating in the incorporation under the Laws of Ontario of Noranda were started in August, 1922, when claims staked by Edmund Horne in Rouyn Township, Quebec, were optioned by a syndicate formed a few months previous for the purpose of exploring promising areas, the acquirement of claims and the general development of mining properties. The Horne claims, together with a number of other properties that had been acquired developed Noranda into an outstanding copper-gold producer. Noranda went on to employ more than 32,000 people, and have assets in excess of $11.8 billion.