Khait (Heit) Isaak Naumovich (23 November 1890, Riga — ?) — educator.

Isaak Khait graduated from the A. Keniņš Real School in 1912. He studied in Bern and St. Petersburg. In May 1923 he graduated from the Faculty of Medicine of the University of Tartu, receiving a physician’s diploma.

While studying in Tartu, from 1920 to 1923 he taught mathematics at the Tartu Jewish Communal Elementary School.

His pedagogical career was closely connected with Liepāja, where from 1 August 1923 to 1 August 1925 he taught at the State Jewish Gymnasium and at the Elementary School of the Liepāja Society of Jewish Culture.

From 1 August 1924 he also began teaching at the City Jewish Gymnasium, becoming its head in 1929. By decision of the Ministry of Education dated 24 August 1935, the gymnasium was closed.

In 1935 he received certification as a fully qualified teacher. From 1935 to 1940 he served as head of the Private Jewish Elementary School. During the 1940/41 academic year he taught mathematics at the State Russian Secondary School and headed the City Jewish School.

He was married to Esther Khait (née Jacobson) and had a son, Mateas.