Gert Henning-Jensen trained at the Opera Academy in Copenhagen. He made his début at the Royal Theatre, Copenhagen in 1992 as Count Almaviva in Rossini’s Barber of Seville. He was engaged by the Royal Theatre, Copenhagen, where he has sung many lyrical rôles, for example in operas by Mozart, Donizetti, Verdi, Puccini, Richard Strauss and Beethoven; he has also taken on the lighter Wagner rôles in Tannhäuser and Die Meistersinger.

Abroad he has sung at the opera houses in Rome and Trieste, appeared at the Rossini Festival in Pesaro and sung as a guest in Rome, Trieste, Liège, Brussels, Vienna, Zürich, Basel and Baden-Baden.

In the 1995–96 season he made his début at the Staatsoper Unter den Linden in Berlin in Mozart’s Zaïde and Cimarosa’s Il matrimonio segreto. At the same opera house he later sang the arduous title rôle in Adolphe Adam’s Le Postillion du Lonjumeau. In April 1998 he made his début at the Metropolitan in New York as David in Wagner’s Die Meistersinger, a rôle he also sings at Covent Garden in London. Gert Henning-Jensen’s work includes rôles in two Richard Strauss operas: Ariadne auf Naxos in Santa Fe and Die schweigsame Frau at the Danish National Opera in Århus.