Nils Olav Young Fearnley (14 December 1881 – 1961) was a Norwegian businessperson and landowner.
He was born to the shipowner Thomas Fearnley (1841–1927) and his wife Elisabeth Young (1854–1932). His brother was Thomas Fearnley (1880–1961).[1] N. O. Young Fearnley went to a trade school in Leipzig, Germany. He established several industries in Norway, among them Ranheim Papirfabrikk.[2][3]