Hadar Rubinstein (הדר רובינשטיין; born April 11, 1967) is an Israeli former Olympic swimmer.

[2] Swimming for Israel at the age of 14 at the 1981 Maccabiah Games, she won gold medals in the women's 100 m butterfly with a time of 1:05.67, and in the women's 200 m butterfly (setting an Israeli record).

[3][4][5][6] When she competed in the Olympics, she was 5–2.5 (159 cm) tall and weighed 115 lbs (52 kg).

[1] She competed for Israel at the 1984 Summer Olympics in Los Angeles, California, in swimming at the age of 17.

[1] Swimming in the Women's 400 metre freestyle she came in 21st with a time of 4:34.95, competing in the Women's 200 metre butterfly she came in 26th with a time of 2:22.78, and Swimming in the Women's 200 metre freestyle she came in 26th with a time of 2:12.32.