Jan Lindhardt (24 April 1938, Copenhagen – 11 November 2014) was a Danish theologian and writer. He was the son of professor Dr Poul Georg Lindhardt and Gerda Winding, and the elder brother of the Rev Mogens Lindhardt. His nephew is actor Thure Lindhardt. He was married to Tine Lindhardt, Bishop of Fyn from 2012 until his death. He graduated with a doctorate in theology from Copenhagen University in 1962, and served as Bishop of Roskilde Diocese from 1997–2008.
Lindhart often commented on television and in newspapers to regarding developments in the Lutheran faith, which is the state church of Denmark. Along with Jacob Holm, of the Fredenskirken in Viby J, he held the opinion that Hell in the traditional concept does not exist, and that the Danish National Church's concept should instead regard a more universalist doctrine. This was rejected by the fundamentalist Inner Mission organization.