Johan Fredrik Feyer (16 July 182126 June 1880) was a Norwegian industrial pioneer and factory owner.
He was born in Christiania (now Oslo), Norway. He was the son of Christian Feyer (1793-1879) and Helene Othilie Falck (1792-1865). His father was a state official and court administrator (sorenskriver). While he was young, his family moved to Egersund in Rogaland. He was educated by the parish priest in the parish of HÃÂ¥ with further education in Christiania. During the 1840s, he traveled to Great Britain to study stoneware production. In 1846 he returned to Egersund where the following year he established a pottery plant, Egersund Potteria, which became Norway's leading stoneware manufacturer during the 1850s.
From 1865 the factory was known as Egersunds Fayancefabrik, producing the fine tin-glazed pottery on earthenware known as faience. By 1876, the factory encountered a financial crisis and was administered by the courts. The estate was not insolvent and the factory continued. Feyer was offered a position which he declined. He subsequently left Egersund and settled in Christiania.