Peter Olsen Hansen (11 June 1818 – 9 August 1895) was the translator of the Book of Mormon into Danish. He was born in Copenhagen, Denmark. A sailor by trade, he joined the Church of Jesus Christ of Latter Day Saints in Boston in 1844. After this Hansen moved to Nauvoo. While at Nauvoo Hansen assisted in building the Nauvoo Temple and also worked on the translation of the Book of Mormon into Danish. Hansen arrived in Salt Lake City in September, 1847. Hansen died at Manti, Utah. He had three wives and several children.