Gaja Grzegorzewska (born 11 May 1980 in Cracow) is a Polish novelist.
She is the author of crime novels about a female private detective, Julia Dobrowolska: Zniwiarz, Noc z czwartku na niedziele, Topielica (Great Caliber Award in 2011) and Grób (2012).
Finished VIII High School in Cracow and Cinematography Studies on Jagiellonian University.