Adolfo Hohenstein was a German painter, advertiser, illustrator, set designer and costume designer. Hohenstein is considered the father of Italian poster art and an exponent of the Stile Liberty, the Italian Art Nouveau. Together with Leonetto Cappiello, Giovanni Mario Mataloni, Leopoldo Metlicovitz and Marcello Dudovich, he is considered one of the most important Italian poster designers.

Adolfo Hohenstein was born in Saint Petersburg, the capital of Russian Empire, to German parents, Julius and Laura Irack. His father was a forest engineer, whose career prompted him to travel extensively. Adolfo moves to Vienna where he grows up and completes his studies. His travels take him to India, where he decorates the houses of the local nobility.

In 1879, he settles down in Milan, Italy. He becomes a set and costume designer for La Scala and other theatres. There he meets the musical publisher Giulio Ricordi, and in 1889 begins to work for the Ricordi Graphical Workshops, where he shortly becomes the artistic director in charge of the graphical part. He'll create the posters for La Bohème and Tosca, as well as publicity for Campari, Buitoni and Corriere della Sera, numerous postcards, covers for scores and booklets. His work will continue to cover the theatrical dimension: scenarios and wardrobes for several works, among them Giuseppe Verdi's Falstaff (1893) and a major part of the works of Giacomo Puccini, from the sketches of Le Villi (1884) to posters of Madama Butterfly (1904). At Ricordi's he has as colleague Giovanni Mario Mataloni and as students Leopoldo Metlicovitz and Marcello Dudovich.

In the first years of the 1900s, after marrying Katharina Plaskuda, a widow, he travels more and more frequently between Italy and Germany till 1906, year in which, after winning the competition for the graphical symbol and the poster for the "Esposizione per il Traforo del Sempione", he leaves Milan for Bonn and Düsseldorf definitively. He will settle in Bonn in 1918. The German years see him engaged mostly as a painter and involved in the decoration of numerous buildings, among them one of the first in constructed reinforced concrete in Renania (1911). He is associated with the Düsseldorf school of painting.

Adolfo Hohenstein died in Bonn 12 April 1928.