HQ, National Iranian Oil Company Hafez Crossing,
 Taleghani Avenue Tehran - Iran/First Central Building,
 Taleghan St., Tehran, Iran,
 Postal Code: 1593657919
 P.O. Box 1863 and 2501
 Образувание, собственост на държавата и управлявано от нея, което предоставя финансови ресурси на иранското правителство. Председател на управителния съвет на NIOC е министърът на петрола. Генерален директор на NIOC е заместник-министърът на петрола.
 16.10.2012 г.
 4.
 National Iranian Oil Company
 (NIOC) PTE LTD
 7 Temasek Boulevard #07-02,
 Suntec Tower One 038987,
 Singapore;
 Registration ID 199004388C
 Singapore
 Дъщерно предприятие на National Iranian Oil Company (NIOC).
 16.10.2012 г.
 5.
 National Iranian Oil Company
 (NIOC)
 International Affairs Limited
 NIOC House,
 4 Victoria Street,
 London
 SW1H 0NE,
 United Kingdom; UK
 Company Number 02772297
 (United Kingdom)
 Дъщерно предприятие на National Iranian Oil Company (NIOC).
 16.10.2012 г.
 6.
 Iran Fuel Conservation Organization
 (IFCO)
 No. 23 East Daneshvar St.
 North Shiraz St.
 Molasadra St.
 Vanak Sq.
 Tehran
 Iran
 Tel.: (+98) 2188604760-6
 Дъщерно предприятие (100 %) на National Iranian Oil Company (NIOC)
 16.10.2012 г.
 7.
 Karoon Oil & Gas Production Company
 Karoon Industrial Zone
 Ahwaz
 Khouzestan
 Iran
 Tel.: (+98) 6114446464
 Дъщерно предприятие (100 %) на National Iranian Oil Company (NIOC)
 16.10.2012 г.
 8.
 Petroleum Engineering & Develop-ment Company
 (PEDEC)
 No. 61 Shahid Kalantari St.
 Sepahbod Qarani Ave.
 Tehran
 Iran
 Tel.: (+98) 2188898650-60
 Дъщерно предприятие (100 %) на National Iranian Oil Company (NIOC)
 16.10.2012 г.
 9.
 North Drilling Company
 (NDC)
 No. 8 35th St.
 Alvand St.
 Argentine Sq.
 Tehran
 Iran
 Tel.: (+98) 2188785083-8
 Дъщерно предприятие (100 %) на National Iranian Oil Company (NIOC)
 16.10.2012 г.
 10.
 Khazar Expl & Prod Co
 (KEPCO)
 No. 19 11th St.
 Khaled Eslamboli St.
 Tehran
 Iran
 Tel.: (+98) 2188722430
 Дъщерно предприятие (100 %) на National Iranian Oil Company (NIOC)
 16.10.2012 г.
 11.
 National Iranian Drilling Company
 (NIDC)
 Airport Sq.
 Pasdaran Blvd.
 Ahwaz
 Khouzestan
 Iran
 Tel.: (+98) 6114440151
 Дъщерно предприятие (100 %) на National Iranian Oil Company (NIOC)
 16.10.2012 г.
 12.
 South Zagros Oil & Gas Production Company
 Parvaneh St.
 Karimkhan Zand Blvd.
 Shiraz
 Iran
 Tel.: (+98) 7112138204
 Дъщерно предприятие (100 %) на National Iranian Oil Company (NIOC)
 16.10.2012 г.
 13.
 Maroun Oil & Gas Company
 Ahwaz-Mahshahr Rd.
 (Km 12)
 Ahwaz
 Iran
 Tel.: (+98) 6114434073
 Дъщерно предприятие (100 %) на National Iranian Oil Company (NIOC)
 16.10.2012 г.
 14.
 Masjed-soleyman Oil & Gas Company
 (MOGC)
 Masjed Soleyman
 Khouzestan
 Iran
 Tel.: (+98) 68152228001
 Дъщерно предприятие (100 %) на National Iranian Oil Company (NIOC)
 16.10.2012 г.
 15.
 Gachsaran Oil & Gas Company
 Gachsaran
 Kohkiluye-va-Boyer
 Ahmad
 Iran
 Tel.: (+98) 7422222581
 Дъщерно предприятие (100 %) на National Iranian Oil Company (NIOC)
 16.10.2012 г.
 16.
 Aghajari Oil & Gas Production Company
 (AOGPC)
 Naft Blvd.
 Omidieh
 Khouzestan
 Iran
 Tel.: (+98) 611914701
 Дъщерно предприятие (100 %) на National Iranian Oil Company (NIOC)
 16.10.2012 г.
 17.
 Arvandan Oil & Gas Company
 (AOGC)
 Khamenei Ave.
 Khoramshar
 Iran
 Tel.: (+98) 6324214021
 Дъщерно предприятие (100 %) на National Iranian Oil Company (NIOC)
 16.10.2012 г.
 18.
 West Oil & Gas Production Company
 No. 42 Zan Blvd.
 Naft Sq.
 Kermanshah
 Iran
 Tel.: (+98) 8318370072
 Дъщерно предприятие (100 %) на National Iranian Oil Company