Grzegorz Kielsa (born 26 May 1979) is a Canada-based Polish professional boxer.
He fought at both the 2000 and 2002 European Boxing Championships but did not gain a medal at either.
Kielsa represented Poland at the 2000 Olympics in Sydney, Australia.
His first fight as a professional boxer was in March 2006, in Montreal, Quebec, Canada, when he beat American fighter Mike Jones with a first round knockout.
[2] Kielsa won his first 6 fights, 3 wins by KO, and in November 2008, he fought for his first title belt against Toronto based Raymond Olubowale at the Casino Rama, Ontario, for the Canadian heavyweight title.