Date of Birth: 
Place of Birth: Przemyśl, Podkarpackie Voivodeship, Poland
About Grzegorz Zajączkowski
- Grzegorz Zajaczkowski (born 25 June 1980) is a Polish sprinter who specializes in the 400 metres. Zajaczkowski was part of Poland's 4 × 400 metres relay at the 2003 World Indoor Championships, together with teammates Rafal Wieruszewski, Marcin Marciniszyn and Marek Plawgo.
- The team originally finished in 4th place, but received bronze medals after the 1st place USA team was later disqualified.
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