Eliyahu Noach Flug (Hebrew: אליהו נח פלוג; 1 January 1925 – 11 August 2011) was an Israeli economist, diplomat and advocate for the rights of Holocaust survivors.

In the last months of the war he was also sent to Gross-Rosen concentration camp and was rescued by the Allied forces while on a death march to Mauthausen.

For several years he served chairman of the Center of Organizations of Holocaust Survivors in Israel, reelected to the post a second time in June 2011.

Flug is the grandfather of Boaz Levin, a writer and curator, Noa Levin, a philosopher and filmmaker, Michael Lach, a PhD student at the Weizmann institute, and Maya Lach, a psychologist.

Flug died in 2011 at Shaare Zedek Medical Center in Jerusalem, age 86.