Kārsava (pronunciationⓘ; German: Karsau, Russian: Корсовка, Korsovka, Polish: Korsówka, Yiddish: קאָרסאָװקע, Korsovke) is a town in Ludza Municipality in the Latgale region of Latvia, near the border of Russia.

The ancient Baltic tribe Latgalians inhabited the territory of Kārsava since the 8th century.

The town was located near the Rēzekne-Ostrov postal road and it saw rapid development when the St. Petersburg-Vilnius railway line was constructed nearby and the town became a trading centre.

In 1935, on the eve of World War II, the population of Kārsava was 2,181, 37% of whom were Jewish.

This Latgale location article is a stub.