Mehdi Samii (Persian: مهدی سمیعی; 1918–2010) was an Iranian chartered accountant, banker and economist.

[1] Samii is credited as "one of the chief architects of Iran's rapid economic and Industrial growth in the 1960s", as well as "a midwife of in the creation of the [Central] bank [of Iran]" and "more than anyone else responsible" for it.

[1] According to Abbas Milani, "the fact that the bank was a relatively independent institution, free from corruption and political interference and unusually efficient", is attributed to his leadership.

[1] Before that, Samii rejected job offers for ministerial roles twice: Once in 1960 when Jafar Sharif-Emami offered him the role of the minister of agriculture and the next in the following year when Ali Amini proposed that he become minister of commerce.

[1] He was a co-founder of Iranian Institute of Certified Accountants.