A nāḥiyah (Arabic: ناحية [ˈnæːħijæ], plural nawāḥī نواحي [næˈwæːħiː]), or nahia, is a regional or local type of administrative division that usually consists of a number of villages and/or sometimes smaller towns. In Tajikistan, it is a second-level division while in Syria, Iraq, Lebanon, Jordan, Xinjiang, and the former Ottoman Empire, where it was also called a bucak, it is a third-level or lower division. It can constitute a division of a qadaa, mintaqah or other such district-type of division and is sometimes translated as "subdistrict".
- Syria: after (i.e. below) Mintaqah-level.
- Iraq: after (i.e. below) Qadaa (district)-level.
- Nahias of Jordan: after governorate (muhafazah)-level.
- Xinjiang, China: after prefectural-level.
- Ottoman Empire: (see Nahiye (Ottoman)) subdistrict, commune, parish; after kaza-level.