Tenuipalpus zahirii Khanjani & Seeman sp. nov., collected from leaves of hawthorn trees, Crataegus monogyna Jacq. (Rosaceae), and oleaster trees, Elaeagnus angustifolia L. (Elaeagnaceae), is illustrated and described from Simin, Hamedan Province, Iran. This species is the first member of the Tenuipalpus proteae species group from Iran. A key to all known Iranian species is provided.