Sertaneja is a municipality in the state of Paraná in Brazil.

It was established as a municipality according to Law nº 2/1947, dated 10 October 1947 dividing the earlier Cornélio Procópio municipality into 3 new district municipalities: Sertaneja, Leópolis and Congonhas.

The municipal area of Sertaneja is 444,48 km² and its population 5,216 (2020). Agriculture is the town's main industry.

This article needs additional citations for verification. Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed. Find sources: "Sertaneja, Paraná" – news · newspapers · books · scholar · JSTOR (January 2021) (Learn how and when to remove this message)