Personal life
On 30 July 1967, at St. Florin's in Vaduz, he married his second cousin once removed Countess Marie Kinsky of Wchinitz and Tettau. They have four children and fifteen grandchildren:
Alois Philipp Maria, Hereditary Prince of Liechtenstein, Regent of Liechtenstein, Count of Rietberg (born on 11 June 1968 in Zürich, Canton of Zürich, Switzerland). Married to German Duchess Sophie Elisabeth Marie Gabrielle in Bavaria (born on 28 October 1967) in July 1993. They have four children:
Prince Joseph Wenzel Maximilian Maria of Liechtenstein, Count of Rietberg (born on 24 May 1995 at Portland Hospital in London, England, United Kingdom).
Princess Marie Caroline Elisabeth Immaculata of Liechtenstein, Countess of Rietberg (born on 17 October 1996 in Grabs, Canton of St. Gallen, Switzerland).
Prince Georg Antonius Constantin Maria of Liechtenstein, Count of Rietberg (born on 20 April 1999 in Grabs, Canton of St. Gallen, Switzerland).
Prince Nikolaus Sebastian Alexander Maria of Liechtenstein, Count of Rietberg (born on 6 December 2000 in Grabs, Canton of St. Gallen, Switzerland).
Prince Maximilian Nikolaus Maria of Liechtenstein, Count of Rietberg (born on 16 May 1969 in St. Gallen, Canton of St. Gallen, Switzerland), known professionally as Max von Liechtenstein. Married to Panamanian-American Angela Gisela Brown (born on 3 February 1958) in January 2000. They have one son:
Prince Alfons "Alfonso" Constantin Maria of Liechtenstein, Count of Rietberg (born on 18 May 2001 in London, England, United Kingdom).
Prince Constantin Ferdinand Maria of Liechtenstein, Count of Rietberg (born on 15 March 1972 in St. Gallen, Canton of St. Gallen, Switzerland – died on 5 December 2023), known professionally as Constantin Liechtenstein. Married to Austrian Countess Marie Gabriele Franziska Kálnoky de Kőröspatak (born on 16 July 1975) in May 1999. They have three children:
Prince Moritz Emanuel Maria of Liechtenstein, Count of Rietberg (born on 27 May 2003 in New York City, New York, United States)
Princess Georgina "Gina" Maximiliana Tatiana Maria of Liechtenstein, Countess of Rietberg (born on 23 July 2005 in Vienna, Austria)
Prince Benedikt Ferdinand Hubertus Maria of Liechtenstein, Count of Rietberg (born on 18 May 2008 in Vienna, Austria)
Princess Tatjana Nora Maria of Liechtenstein, Countess of Rietberg (born on 10 April 1973 in St. Gallen, Canton of St. Gallen, Switzerland), also known after marriage as Tatjana von Lattorff. She graduated from European Business School in Madrid, Spain and is fluent in German, English, French and Spanish. Princess Tatjana is a patron of SOS Children's Village Liechtenstein, president of Princess Gina of Liechtenstein Foundation and also president of the board of trustees of Prince Franz Josef of Liechtenstein Foundation. In 2020, she became the president of the Vienna International School Association. Married to German Baron Matthias Claus-Just Carl Philipp von Lattorff (born on 25 March 1968 in Graz, Styria, Austria) on 5 June 1999. Baron Philipp is the eldest son of Baron Claus-Jürgen von Lattorff and Countess Julia Batthyány von Angol-Ujvár. He worked for Boehringer Ingelheim as a CEO and is the vice president of Federation of Austrian Industries. They have seven children:
Lukas Maria von Lattorff (born on 13 May 2000 in Wiesbaden, Hesse, Germany). Married to Countess Marie von Wilczek on 6 June 2026.
Elisabeth Maria Angela Tatjana von Lattorff (born on 25 January 2002 in Grabs, Canton of St. Gallen, Switzerland)
Marie Teresa von Lattorff (born on 18 January 2004 in Grabs, Canton of St. Gallen, Switzerland)
Camilla Maria Katharina von Lattorff (born on 4 November 2005 in Monza, Lombardy, Italy)
Anna Pia Theresia Maria von Lattorff (born on 3 August 2007 in Goldgeben, Lower Austria, Austria)
Sophie Katharina Maria von Lattorff (born on 30 October 2009 in Goldgeben, Lower Austria, Austria)
Maximilian Maria von Lattorff (born on 17 December 2011 in Goldgeben, Lower Austria, Austria)
They remained married until her death on 21 August 2021 at the age of 81.
The Prince is an honorary member of K.D.St.V. Nordgau Prag Stuttgart, a Catholic students' fraternity that is a member of the Union of Catholic German Student Fraternities.
The Prince donated $12 million in 2000 to found the Liechtenstein Institute on Self-Determination (LISD) at Princeton University's Princeton School of Public and International Affairs. In his childhood, he joined the Pfadfinder und Pfadfinderinnen Liechtensteins in Vaduz. He is also a former member of the Viennese Scout Group "Wien 16-Schotten". He is a member of the World Scout Foundation.
His younger son Prince Constantin died on 5 December 2023 at the age of 51.