Per Arnoldi (born May 25, 1941 Copenhagen) is a Danish designer and artist. He has worked with many media, including painting, sculptures, ceramics and posters and has made designs for many companies, organisations and institutions, doing air planes, train stations, hospitals, architecture, monuments, stores, company profiles, handicrafts and everyday utensils. His characteristic simplistic expressions are often categorized as modern art. Arnoldi has worked in many countries around the world and is on permanent exhibit in several prestigious art and design institutions for his unique and influential productions, including Museum of Modern Art in New York.
Apart from his prolific poster art production, some of Arnoldi's best known single works are the logo and curtains designs of the Copenhagen Opera House from 2004 and London's National Police Memorial, co-designed with Peter Ridley from Foster + Partners. Other well-known works include the "Romantic Construction", "The Wall", and "Corrections". Herning Museum of Contemporary Art in Denmark holds the largest permanent display of his work.
In Denmark, Arnoldi is a well-known art mediator, hosting TV shows about art through most of the 80's. From 2008 to 2010, he was a member of Akademirådet (The Academy Council) at the Royal Danish Academy of Fine Arts and he was appointed chairman for Kunstrådet (The Art Council) in the Danish government administration for about a year in 2011.