Amblyseius azerbaijanicus Abbasova, A. meridionalis Berlese, Neoseiulus multiporus (Wu & Li) and Typhlodromus (Anthoseius) bakeri (Garman), collected in northern Iran, are new species records for the Phytoseiidae fauna of Iran. Amblyseius azerbaijanicus and A. meridionalis were sampled from soil, and N. multiporus and T. bakeri from the foliage and trunk of plum respectively. Illustrations and measurements are provided for the Iranian specimens. We have also found that the spermatheca in T. bakeri can be differently shaped, depending on the position in which it is viewed, and some suspected synonymies are proposed based on this fact.