Jacek Bocian (born 15 September 1976 in Kalisz) is a Polish former sprinter who specialised in the 400 metres. His biggest successes came in the Polish 4 × 400 metres relay, including gold medals at the 1999 World Championships and 2001 World Indoor Championships, as well as the silver at the 1999 World Indoor Championships. In addition, he competed at the 2000 Summer Olympics.