Dizaj or Dezej (), also rendered as Dizeh or Dizach, may refer to:
Dezej, a city in Kurdistan Province, Iran
Ardabil Province Dizaj, Ardabil Dizeh, Khalkhal, Ardabil Province
East Azerbaijan Province Dizaj, Meyaneh, East Azerbaijan Province Dizaj, Osku, East Azerbaijan Province Dizaj-e Aqa Hasan, East Azerbaijan Province Dizaj Azim, East Azerbaijan Province Dizaj-e Hasan Beyg, East Azerbaijan Province Dizaj-e Hoseyn Beyg, East Azerbaijan Province Dizaj-e Jalu, East Azerbaijan Province Dizaj Khalil, East Azerbaijan Province Dizaj-e Leyli Khani, East Azerbaijan Province Dizaj-e Malek, East Azerbaijan Province Dizaj-e Mir Homay, East Azerbaijan Province Dizaj-e Parvaneh, East Azerbaijan Province Dizaj-e Qorban, East Azerbaijan Province Dizaj-e Reza Qoli Beyg, East Azerbaijan Province Dizaj-e Safar Ali, East Azerbaijan Province Dizaj-e Sefid, East Azerbaijan Province Dizaj-e Shur, East Azerbaijan Province Dizaj-e Talkhaj, East Azerbaijan Province
Hamadan Province Dizaj, Hamadan
Isfahan Province Dezej, Isfahan, in Dehaqan County
Markazi Province Dizaj, Markazi
Qazvin Province Dizaj, Qazvin
Semnan Province Dizaj, Semnan
West Azerbaijan Province Dizaj, Chaldoran, a village in Chaldoran County Dizaj-e Hatam Khan, a village in Chaypareh County Dizaj-e Aland, a village in Khoy County Dizaj-e Batchi, a village in Khoy County Dizaj Diz, a village in Khoy County Dizaj-e Herik, a village in Khoy County Dizaj-e Jamshid Khan, a village in Khoy County Dizaj-e Morteza Kandi, a village in Khoy County Dizaj, Naqadeh, a village in Naqadeh County Dizaj, Showt, a village in Showt County Dizaj, West Azerbaijan, a village in Urmia County Dizaj-e Dowl, a village in Urmia County Dizaj-e Naqaleh, a village in Urmia County Dizaj-e Fathi, a village in Urmia County Dizaj-e Rahim Pur, a village in Urmia County Dizaj-e Takyeh, a village in Urmia County Dizaj Rural District, in Khoy County