Kazem Hassibi (Hasibi) (Persian: کاظم حسیبی) (born Tehran, October 1906 – died Tehran, October 28, 1990) was an Iranian academic, parliamentarian, National Front leader, and oil adviser to Prime Minister Mohammad Mosaddegh during Iran's oil nationalization movement.

[1] Politically active on issues related to oil, he became Deputy Minister of Finance under Mosaddegh and, in 1951, a member of the House of Parliament.

[2] He was a strong proponent of nationalization of the Anglo-Iranian Oil Company and refused to take part in the mediation talks between Iran and the British led by W. Averell Harriman in Tehran in July 1951.

After the 1953 Iranian coup d'état unseated Mosaddegh, Hassibi was imprisoned along with other important members of the National Front.

Kazem's father was a watchmaker/clocksmith, and craftsman of other time keeping devices and/or scientific instruments in Tehran, Iran during the late 19th century.