Antoni Niemczak (born November 17, 1955) is a retired long-distance runner from Poland, who won the inaugural 1984 edition of the Vienna Marathon, clocking 2:12:17 on March 25, 1984. He finished in eighth place at the 1986 European Championships in Stuttgart, West Germany. His best marathon time is 2:09:41, which he ran on October 28, 1990 in the Chicago Marathon. He finished in second place with a margin of less than one second between him and Martin Pitayo. Antoni was ranked seventh in the world for the marathon in 1990, the same year he won the San Francisco Marathon. Niemczak now manages The Inn at Paradise, a beautiful bed and breakfast in Albuquerque, New Mexico with his wife Natalia. A devoted Catholic and a loving husband and father, Niemczak has become an avid skier and golfer. He has three daughters and one son. His youngest daughter, Zofia is following her father's athletic footsteps, but in a different way: she is quickly becoming an excellent swimmer.