Epp Kaidu (pseudonym; real name Leida Ird, born Leida Rosenblatt; 15 April 1915 Jäärja Parish – 23 June 1976 Tallinn) was a Soviet and Estonian theatre director and actress.

In 1952 she graduated from higher courses of direction (Estonian: kõrgemad režiikursused) in Moscow.

From 1940 until 1941, she worked at the Vanemuine theatre in Tartu.

From 1942 until 1944, she belonged to Estonian SSR State Artistic Ensembles.

[1] In 1936, she wed theatre director and actor Kaarel Ird.