Mortkhelovich (Mortchelowitsch) Isaak Davidovich (1913, Dobele, Latvia) — educator.

Isaak Mortkhelovich was born into the family of David Meyerovich Mortkhelovich (1880, Tukums — 1941, Jelgava; murdered by the Nazis) and Rosa Izrailevna Mortkhelovich (née Berman) (1890, Tukums — 1920, Voronezh). During World War II he was evacuated to the Pakhtakor District of the Uzbek SSR, where he worked as a German-language teacher at local Secondary School No. 8 (1941–1945). After moving to Riga, he taught history at Secondary Schools Nos. 20, 4, 11, and 23 (1945–1969). He completed his studies by correspondence at the Riga Pedagogical Institute in 1952.

Married to Regina Grigorievna Mortkhelovich (née Lippert) (1921, Riga). Their daughters are Mira Isaakovna Mortkhelovich (1946, Riga) and Dina Isaakovna Mortkhelovich (1950, Riga).

In 1969 Isaak Mortkhelovich received permission to emigrate to Israel, where his sister Rivka-Roza Davidovna Aizikovich (née Mortkhelovich) (1915) was living.

Family :

David Meyerovich Mortkhelovich (1880–1941) — father
Rosa Izrailevna Mortkhelovich (née Berman) (1890–1920) — mother
Iosif Davidovich Mortkhelovich (1911, Dobele — 1941, Jelgava; murdered by the Nazis) — brother
Rivka-Roza Davidovna Aizikovich (née Mortkhelovich) (1915) — sister
Regina Grigorievna Mortkhelovich (née Lippert) (1921) — wife
Mira Isaakovna Mortkhelovich (1946) — daughter
Dina Isaakovna Mortkhelovich (1950) — daughter