Sandler (Zandler; née Tsivyan) Ester Aronovna (29 October 1904, Kreutzburg, Vitebsk Province — 23 December 1953, Riga) — educator, teacher of physical education, sports and artistic gymnastics, and dance.

Ester Sandler graduated from a secondary pedagogical institution for training physical education teachers. From 1928, she taught physical education at the Private Jewish secondary and elementary gymnasium of I. Rauchvarger in Riga and at the 4th Riga municipal Jewish elementary school.

In 1929, she graduated from the Institute of Physical Culture of the Latvian People’s University. In 1937, she fell ill with septic endocarditis and was forced to leave her teaching position.

In 1943–1945, she worked as a registrar at a children’s polyclinic in Kirov. In 1945, she returned with her family to Riga.

She was married to Isaak Sandler, an educator. Their son was Ben-Zion (Biento, b. 1932).