Prince Lorenz of Belgium, Archduke of Austria-Este (born 16 December 1955) is a member of the Belgian Royal Family and an Austrian-Belgian citizen. Since 1996 he is also head of the House of Austria-Este, a branch of the formerly Imperial Austrian House of Habsburg-Lorraine.

Prince Lorenz was born in Clinique du Belvédère, Boulogne-Billancourt, Hauts-de-Seine, France, as the second child of Robert, Archduke of Austria-Este and of Archduchess Margaret, born Princess Margherita of Savoy-Aosta.

On 22 September 1984 in Brussels, Lorenz married Princess Astrid of Belgium, the only daughter of the then Prince and Princess of Liège, former King Albert II and Queen Paola. The couple have five children and one granddaughter:

Prince Amedeo Marie Joseph Carl Pierre Philippe Paola Marcus d’Aviano, Archduke of Austria (born 21 February 1986); married Elisabetta Maria Rosboch von Wolkenstein (b. 1987) on 5 July 2014. The couple have one daughter:
Archduchess Anna Astrid of Austria-Este (born 17 May 2016)
Princess Maria Laura Zita Beatrix Gerhard, Archduchess of Austria (born 26 August 1988)
Prince Joachim Karl-Maria Nikolaus Isabelle Marcus d’Aviano, Archduke of Austria (born 9 December 1991)
Princess Luisa Maria Anna Martine Pilar, Archduchess of Austria (born 11 October 1995)
Princess Laetitia Maria Nora Anna Joachim Zita, Archduchess of Austria (born 23 April 2003)
Prince Lorenz is a godfather to Prince Carl-Johan of Nassau, youngest child of Prince Jean of Luxembourg and Count Costantino Secco di Aragona, oldest son of his cousin Archduchess Catharina-Maria of Austria.

After finishing school, Archduke Lorenz made his military service in the regiment of Gebirgsjäger (Alpine Hunters) of the Federal Austrian Army and was promoted as Reserve “Leutnant” (Second Lieutenant) in 1980.

Lorenz studied economics at the University of St. Gallen in Switzerland and the University of Innsbruck in Austria. He worked at various banks in London, Paris, and Rome. In 1983 he joined the Gutzwiller private bank in Basel where he eventually became a Managing Partner. In 1993, he spent one year as a consultant to Swift, a company which provides services to the financial industry. In 1995, he became Advisor to the Board of Directors of BNP Paribas Bank in Paris. He was formerly a director of UCB, Sita (a worldwide waste management company located in France) and of Ondeo Nalco (a water management company in the United States).