Jacek Niedźwiedzki (7 June 1951 – 27 October 2021[1]) was a professional tennis player from Poland.

A five-time doubles gold medalist in the Polish Championships, Niedźwiedzki featured in nine ties for the Poland Davis Cup team during the 1970s, for a record of 6 wins from 15 matches.

[2] His only main draw appearance in a Grand Slam tournament was at the 1975 French Open when he faced 11th seed Jaime Fillol in the first round.

[4] With his partner, Wojciech Fibak, he defeated Colin Dowdeswell and Paul Kronk in the final.

[4] In 1977 he was a losing singles finalist in the Zurich Grand Prix tournament, to Sweden's Jan Norbäck.