Julian Ignacy Nowak (Polish pronunciation: [ˈjuljan ˈnɔvak]; 10 March 1865 – 7 November 1946) was a Polish microbiologist and politician who served as 9th Prime Minister of Poland in 1922.

Being a conservative politician, he served as the Prime Minister briefly in 1922.

In the same year, he also served briefly as the Minister of Religious Affairs.

He was awarded the Commander's Cross of the Order of Polonia Restituta.

Julian Ignacy Nowak was buried in Rakowicki Cemetery.