List of Famous people born on January 21st

Christina Maslach is an American social psychologist and professor emerita of psychology at the University of California, Berkeley, known for her research on occupational burnout. She is a co-author of the Maslach Burnout Inventory and Areas of Worklife Survey. Early in her professional career, Maslach was instrumental in stopping the Stanford prison experiment.

Umberto Nobile was an Italian aviator, aeronautical engineer and Arctic explorer. Nobile was a developer and promoter of semi-rigid airships during the years between the two World Wars. He is primarily remembered for designing and piloting the airship Norge, which may have been the first aircraft to reach the North Pole, and which was indisputably the first to fly across the polar ice cap from Europe to America. Nobile also designed and flew the Italia, a second polar airship; this second expedition ended in a deadly crash and provoked an international rescue effort.

Ludwig Thoma was a German author, publisher and editor, who gained popularity through his partially exaggerated description of everyday Bavarian life.

Paula Hitler was the younger sister of Adolf Hitler and the last child of Alois Hitler Sr. and his third wife, Klara Pölzl, as well as the sister-in-law of Eva Braun.

Sebastian Schindzielorz is a Polish-born German former footballer who has previously played for VfL Wolfsburg.

Farhat Nursultanuly Abdraimov (Kazakh: Фархат Нұрсұлтанұлы Әбдірайымов, Farhat Nūrsūltanūly Äbdıraiymov; was a Kazakh actor.

Alexander Vladimirovich Gusev was a Russian Soviet ice hockey player and Olympic champion. He participated at the 1976 Winter Olympics in Innsbruck, where the Soviet team won the gold medal. He played the majority of his career with HC CSKA Moscow.

Nicholas Butt is an English football coach and former player who is the head of first-team development at Manchester United. He is also a co-owner of Salford City.

Simon James Arthur Taufel, is a former Australian cricket umpire who was earlier a member of the ICC Elite umpire panel. He won five consecutive ICC Umpire of the Year awards between 2004 and 2008, and was generally considered to have been the best umpire in the world during his time. He announced his retirement from international cricket on 26 September 2012, after the 2012 ICC World Twenty20 final. He subsequently worked as the ICC's Umpire Performance and Training Manager until October 2015. In 2020 he joined the Channel Seven commentary team as an expert commentator for the 2020/21 test series.

David Charles Harris is a former American football linebacker of the National Football League (NFL). He played college football for the University of Michigan. Harris was drafted by the New York Jets in the second round of the 2007 NFL Draft.