Christian Ditlev Ammentorp Hansen (25 February 1843 – 20 June 1916) was a Danish pharmacist and industrialist.
He founded Christian Hansen's Technical-Chemical Laboratory (Chr.
Hansen), which revolutionized the production of wholesome dairy products in the 1870s.
He also had a key role in the establishment of the Danish Pharmaceutical College in Copenhagen in 1892, financing its first building in Stockholmsgade out of his own pocket.
He owned Mullerup on Funen and Bøstrup at Slagelse.