Conrad Christian Parnemann Langaard (18 November 1823 – 11 August 1897) was a Norwegian businessperson.

He was born in Lillesand

Lillesand

is a town and municipality in Aust-Agder county, Norway. It is part of the traditional district of Sørlandet. The administrative center of the municipality is the town of Lillesand.-General information:...

 as a son of sea captain Mads Christian Langaard (1774–1854) and Ellevine Ellefsen (1792–1874). He was a brother of Mads Langaard, and through him an uncle of Christian Langaard and a granduncle of Johan Henrik Langaard.

From March 1857 he was married to Henriette Bull (1829–1867), and from February 1869 he was married to Andrea Serene Jensen (1821–1894), a sister of Peter Andreas Jensen. Through his son, factory owner Rasmus Agerup Langaard (1860–1908), he was a grandfather of tennis player Conrad Langaard

Conrad Langaard (tennis player)

Conrad Langaard was a Norwegian tennis player.He was born in Kristiania as a son of merchant and factory owner Rasmus Agerup Langaard and his wife Laura Nannestad Holmboe . His paternal grandfather was Conrad Langaard , founder of the company of the same name...

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He entered the tobacco industry in 1849, and founded the eponymous company Conrad Langaard in 1854. He was also a ship-owner, and was one of the wealthiest persons in Norway. His company still exists.