Jean-Joseph Norbert Metz (2 February 1811 – 28 November 1885) was a Luxembourgish politician and engineer.
With his two brothers, members of the powerful Metz family, Charles and Auguste, Metz defined political and economic life in Luxembourg in the mid-nineteenth century.Metz was the leading 'quarante huitards': the radical liberals responsible for the promulgation of Luxembourg's constitution in 1848.
He was appointed by the King to the Assembly of the States in 1842, representing the canton of Capellen.
He was then elected to represent Capellen on the Constituent Assembly, in 1848.