Prinz Constantin was born on 15th March 1972 in St. Gallen, and attended the Vaduz-Ebenholz Primary School. In 1983 he entered the Liechtenstein secondary school, from which he graduated with the A-level certificate in 1991.

After graduation Prince Prinz Constantin worked in various operations of the Prince of Liechtenstein Foundation, and acquired his initial professional experience in the forestry, agriculture and real estate sectors. A several-month training programme with various financial institutes in Vaduz, London, San Francisco and Hong Kong subsequently followed.
From 1992 to 1997 Prince Constantin studied jurisprudence at the University of Salzburg, and concluded the course of studies with a masters degree. After a half-year practical internship with the Bertelsmann media concern, Prince Constantin now works with Brown Borthers Harriman in New York. On 17th July 1999 Prince Constantin married Countess Marie Kálnoky in Csicsó (Slovakia). Countess Marie Kálnoky was born in Graz on 16th July 1975 as the youngest of six daughters from Count Alois Kálnoky and Countess Lindi, née Baroness von Oer.