| Grzegorz Łomacz | |
| Birth Date: | 1 October 1987 |
| Birth Place: | Ostrołęka, Poland |
| Height: | 1.88 m |
| Weight: | 80 kg |
| Spike: | 336 cm |
| Block: | 315 cm |
| Position: | Setter |
| Currentclub: | Skra Bełchatów |
| Currentnumber: | 12 |
| Years: | 2006–2007 2007–2011 2011–2014 2014–2017 2017– |
| Teams: | AZS Politechnika Warszawska Jastrzębski Węgiel Trefl Gdańsk Cuprum Lubin Skra Bełchatów |
| Nationalyears: | 2009– |
Grzegorz Łomacz (born 1 October 1987) is a Polish professional volleyball player who plays as a setter for Skra Bełchatów and the Poland national team. With Poland, Łomacz won the 2018 World Champion title and took part in 3 Olympic Games – Rio 2016, Tokyo 2020 and Paris 2024, winning a silver medal at the latter.
Łomacz is a silver medallist of the 2013 Summer Universiade held in Kazan. For 3 seasons, he was a player and captain of Trefl Gdańsk. In 2014, he signed a contract with Cuprum Lubin.[1] After a good season and 6th place in PlusLiga, he decided to leave the club from Lubin. On 27 April 2017, it was announced that Łomacz signed a two–year contract with Skra Bełchatów.[2]
On 30 September 2018, Poland achieved its third title of the World Champion.[3] Poland beat Brazil in the final 3-0 and defended the title from 2014.
On 10 August 2024, he won the silver medal at the 2024 Summer Olympic Games in Paris.[4]