| Maria Sajdak | |
| Nationality: | Polish |
| Birth Date: | 30 July 1991 |
| Birth Place: | Kraków, Poland |
| Height: | 1.74 m |
| Weight: | 70 kg |
| Country: | Poland |
| Sport: | Rowing |
| Event: | Quadruple sculls |
Maria Sajdak (; born 30 July 1991) is a Polish national representative rower, an Olympian and a world champion. She is a reigning world champion in the women's quad scull winning her title at the 2018 World Rowing Championships in Plovdiv. She competed in the women's quadruple sculls event at the 2016 Summer Olympics where she won a bronze medal.[1]