Arnoldo "Nene" Penzkofer (1959 in Cambyreta, Itapúa – November 16, 2008 in Asunción) was a Paraguayan basketball player. At a height of 2.12 m (6 ft 11.5 in), Penzkofer was the tallest Paraguayan basketball player in history and one of the most influential figures in the sport. In his native Itapúa Penzkofer worked as a milkman, and at the age of 18 he was invited to join Club Ciudad Nueva by a scout from that team even though he had never practiced basketball before and was not aware of any of the sport's rules.