Portnaya Dvoyra Izrailevna (12 June 1920, Dnepropetrovsk — ?, ?) — pharmacist.

After graduating from Secondary School No. 19 (Dnepropetrovsk), Dvoyra Portnaya studied at the Dnepropetrovsk Pharmaceutical Institute from 1938 to 1941. From 1941 to 1944, she was in evacuation in Buguslan (Orenburg Region), where she worked as head of the pharmacy of Evacuation Hospital No. 4511. In 1944–45, she was a student at the Odessa Pharmacological Institute. From 1945 to 1950, she headed the pharmacy of the Stanislav (Ivano-Frankivsk) Medical Institute. In 1950–54, she managed the pharmacy of the Yaremcha Sanatorium (Stanislav Region). In 1954–55, she was deputy manager of Yaremcha District Pharmacy No. 56. In 1955–56, she worked as a pharmacist at the Infectious Diseases Hospital in Stanislav (Ivano-Frankivsk). From 1956 to 1978, she was a laboratory assistant at the toxicology laboratory of the Stanislav Regional Sanitary-Epidemiological Station. In 1967, she travelled to Romania as a tourist; in 1969, to Bulgaria.

Since 1952, she was married to Isaak Iosifovich Segal. Their son,Vladimir Isaakovich Segal (b. 2 December 1952, Ivano-Frankivsk), emigrated to Israel (Be’er Sheva) in 1978.

Her father, Izrail Aizikovich Portnoy (1893, Dnepropetrovsk — 1964, Stanislav/Ivano-Frankivsk), was a furniture maker. Her mother, Ida Abramovna Portnaya (née Pikovskaya) (1898, Rechitsa, Gomel Region — ?, ?). Her brothers: Ruvim Izrailevich Portnoy (1924, Dvinsk/Daugavpils (Riga?) — 1942, ?), killed in action; and Alexander Izrailevich Portnoy (b. 1932, Dnepropetrovsk), engineer. Niece (or daughter?): Rimma Alexandrovna Varamkina (née Portnaya) (b. 1945, Odessa).