Katja Petrowskaja (Russian: Екатерина Мироновна Петровськая, Ukrainian: Катерина Миронівна Петровська; born 3 February 1970) is a Kyiv born German prose writer and journalist.

She grew up as Kateryna in Kyiv and, after the Chernobyl disaster, in Moscow as the younger daughter of professor of literature Miron Petrovsky and the teacher Svetlana.

In 1998 she defended her dissertation The poetical prose of Vladislav Khodasevich at the Russian State University for the Humanities in Moscow.

In 1999 she moved to Germany where she lives with her husband and two daughters in Berlin.

After writing for Russian newspapers, she started to publish in the German language newspapers Neue Zürcher Zeitung, and Frankfurter Allgemeine Zeitung.