ni akoole ninu ISO 3166-2, apa opagun ISO 3166 ti International Organization for Standardization (ISO) tejadesiwe to setumo awon amioro fun oruko awon ipinsabe koko awon orile-ede.ItokasiISO 3166.. 
Ní àkọlé nínú ìṣọ́ 3166-2, Apá Óò Ìṣọ 3 ti International Organization Organization Ledar Jukezation (O) tẹ̀ jáde sí ìwé tó ṣe Ìtúmọ̀ àwọn Àmín Ọ̀rọ̀ fún orúkọ àwọn ìpín ìfì kókó àwọn orílẹ̀-èdè Nàìjíríà .Ìtọ́kasí 3Odi 