Amikam Aharoni (Hebrew: עמיקם אַהֲרֹֹנִי; 5 August 1929 – 21 January 2002) was an Israeli physicist who has made numerous contributions to the fields of magnetism.

Aharoni's work on micromagnetics and the phenomenological theory of ferromagnets provided deep insights into the behavior of magnetic materials[3] Aharoni's 1996 book, "Introduction to the Theory of Ferromagnetism" has been described as an authoritative introduction to micromagnetism.

His father was a teacher of mathematics (and distinguished chess master) who had emigrated from Russia, arriving in Israel in 1920.

The family was religious, and Aharoni was able to recite from memory passages from both the bible and the talmud of considerable length.

Aharoni joined the "Students' Brigade" and was deployed in and around Jerusalem, taking part in numerous actions during the city's 1947–1948 siege.