Isaac Wulff Heyman

Isaac Wulff Heyman (1 November 1818 - 19 June 1884) was a Danish businessman and philanthropist. He was the elder half brother of Tuborg-founder Philip Heyman.

Heyman was born in Copenhagen, the son of Wulff Philip Heyman (1794–1866) and Gittel Isaac Moses (c. 1792–1833). His father was after the mother's early death married second time to Jacobine Meyer (1812–73) in 1835.

Heyman was just 18 years old when he in a partnership with I. M. Levin started his own brokerage firm, benefitting from favourable market conditions prior to leaving it again in 1849. He worked as a broker for a few more years but increasingly engaged in real estate investments, development projects and industrial enterprises. In 1853, he established the Svanholm Brewery on Gammel Kongevej in a partnership with his father. He also founded the Sophiehaab chemical factory and was for a while co-owner of Christianshavn Steam Mill. He was vice chairman of Copenhagen's Association of Landowners in 1865–81 and its chairman in 1881–84.

He acquired Roskilde Distilleries in a partnership with C. A. Olesen in 1878 and modernized the factory prior to its merger with other similar factories under the name De Danske Spritfabrikker in 1881.

He was a co-founder of Industribanken in 1862 and was a member of its board of representatives until 1880; the last three years as its chairman.

He was from 1871 to 1880 a member of the Copenhagen City Council. He was also very active in the Jewish community, for instance as a board member and chairman of several of its philanthropical societies.

He founded I.W. Heymans og hustrus sølvbryllups stiftelse in connection with his and his wife's silver wedding anniversary in 1871. It was located at Peder Hvitfeldts Stræde 8 and contained residences for "good and indigent unmarried people". It existed until 1971. It was in 1869 followed by J. V. Heyman og hustrus stiftelse for officersenker at Viktoriagade 19 with five residents for officer's widows. The building was demolished inn 1895. He also created a number of grants.

Heiman married Johanna Levysohn (27 June 1824 - 11 October 1885), a daughter of the merchant Joachim L. (died 1857) and Betty Isaac, on 5 July 1846 in Hamburg. He was created a Knight in the Order of the Dannebrog in 1865 and was awarded the Cross of Honour in 1869. He died on 19 June 1884 and is buried at the Jewish North Cemetery.