Nicholas J. "Nat" Hickey (born Nicola Zarnecich; January 30, 1902 – September 16, 1979) was a Croatian-American professional basketball coach/player and baseball player. He turned to coaching basketball after his retirement from playing full-time in 1942 but occasionally activated himself as a player for the teams he was coaching. In 1948, at the age of 45, Hickey played two games with the Providence Steamrollers of the Basketball Association of America (BAA) while serving as the team's head coach, making him the oldest player in NBA history.