This study is based on extensive field operations in the Zagros-Arasbaran and Hyrcanian habitats been the aim of determining the types and range physiographic of forest oak trees and their diversity has been identified.Accordingly, a total of 8 species of oak forest types have been identified as the main species. Quercus Persica Zohary,, Q. infectoria Oliv, Q.libani Oliv Q.magnosquamata Djavanchire in the Zagros habitat.Q.castaneifolia CAM, Q.macrantera Fisch, Q.iberica Krassi in the Hyrcanin habitat and Q.macrantera Fisch Q.komarovii Camus Arasbaran in the Arasbaran habitat. The results also showed that the total area of oak forest is 5785760 hectares in Iran that about 98 percent of its habitat is located in the Zagros. Iran oak forests are in Kerishan Mountain in Arasbaran habitat for highest latitude (fig: 1) and eastern longitude of oak forest growth in Ashkhane Mountain (Khorasan province) and the lowet alititud of oak forest growth in Parishan mountain (Fars province). About 88 oak forest type identified that there are about 30 type for Zagros habitate and 35 type for Hyrcanian habitate and 23 type for arasbaran habitate. The forests are growing in the range 350 to 2000 mm of rainfall in the hyrcanian region and about 300 to 500 mm in Arsbarn and 300 to 900 mm in the Zagros region. At least the habitat maps for oak forests in Iran prepared and published they are with 1: 250000 scales for zagrous and 1: 50000 scale for Hyrcany and Arasbaran habitat.