Helmut Jahn, German-American architect
Helmut Jahn (January 4, 1940 – May 8, 2021) was a German-American architect, known for projects such as the Sony Center on the Potsdamer Platz in Berlin, Germany; the Messeturm in Frankfurt, Germany; the Thompson Center in Chicago; One Liberty Place in Philadelphia, Pennsylvania (formerly the tallest building in Philadelphia); and Suvarnabhumi Airport, in Bangkok, Thailand, among others.

His recent projects included 50 West Street, a residential tower in New York City in 2016 and the ThyssenKrupp Test Tower in Rottweil, Germany in 2017.