
Photo: Le Miroir des Sports · Public domain · Wikimedia Commons
Hans Jacob Nielsen (2 September 1899 in Næstved – 6 February 1967 in Aalborg) was a Danish featherweight and lightweight boxer who competed in the 1920s.
He was reigning world champion between 1924 and 1928 after winning the gold medal in boxing at the 1924 Summer Olympics in the lightweight category, defeating Alfredo Copello in the final.
His first Olympic appearance was at the 1920 Antwerp Games when he was eliminated in the second round of the featherweight class after losing his fight to James Cater.
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No professional bouts recorded
Bout-by-bout history is added as results are published and verified. The career record above is the official total.