| Justyna Banasiak | |
| Birth Date: | 2 May 1986 |
| Birth Place: | Szczecin, Poland |
| Height: | 5-6.5 (169 cm) |
| Weight: | 108 lbs (49 kg) |
| Discipline: | RG |
| Level: | Senior International Elite |
| Natlteam: | 2004–2005 (?) |
| Club: | MKS Kusy Szczecin |
| Show-Medals: | yes |
Justyna Banasiak (born 2 May 1986 in Szczecin) is a Polish group rhythmic gymnast. She represents her nation at international competitions.
She participated at the 2004 Summer Olympics in the group all-around event together with Alexandra Wójcik, Martyna Dąbkowska, Małgorzata Ławrynowicz, Anna Mrozińska and Aleksandra Zawistowska finishing 10th. She competed at world championships, including at the 2005 World Rhythmic Gymnastics Championships.[1] [2]