| Grzegorz Zimniewicz | |
| Birth Date: | 13 October 1991 |
| Birth Place: | Leszno, Poland |
| Height: | 1.84 m |
| Weight: | 82 kg |
| Sport: | Athletics |
| Event: | 100 metres |
| Education: | PWSZ Leszno |
| Club: | UKS Achilles Leszno[1] |
| Coach: | Dariusz Górski |
Grzegorz Zimniewicz (born 13 October 1991) is a Polish athlete competing in sprinting events. He represented his country in the 4 × 100 metres relay at the 2013 World Championships without qualifying for the final.
| Representing | ||||||
|---|---|---|---|---|---|---|
| 2009 | European Junior Championships | Novi Sad, Serbia | 6th (h) | 4 × 100 m relay | 40.70 | |
| 2010 | World Junior Championships | Moncton, Canada | 4th (h) | 100 m | 10.371 | |
| 10th (h) | 4 × 100 m relay | 40.24 | ||||
| 2011 | European U23 Championships | Ostrava, Czech Republic | 11th (h) | 100 m | 10.64 | |
| 4th | 4 × 100 m relay | 39.40 | ||||
| Military World Games | Rio de Janeiro, Brazil | 24th (h) | 100 m | 10.972 | ||
| bgcolor=gold | 1st | 4 × 100 m relay | 39.63 | |||
| 2013 | European U23 Championships | Tampere, Finland | 5th | 100 m | 10.55 | |
| bgcolor=silver | 2nd | 4 × 100 m relay | 38.81 | |||
| World Championships | Moscow, Russia | 11th (h) | 4 × 100 m relay | 38.51 | ||
| 2015 | Universiade | Gwangju, South Korea | bgcolor=silver | 2nd | 4 × 100 m relay | 39.50 |
| Military World Games | Mungyeong, South Korea | 14th (sf) | 100 m | 10.79 | ||
| bgcolor=gold | 1st | 4 × 100 m relay | 39.35 | |||
| 2016 | European Championships | Amsterdam, Netherlands | 6th | 4 × 100 m relay | 38.69 | |
| 2017 | IAAF World Relays | Nassau, Bahamas | 17th (h) | 4 × 100 m relay | 39.84 | |
| Universiade | Taipei, Taiwan | – | 4 × 100 m relay | DQ | ||
2Did not finish in the semifinals
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