A mahallah, also mahalla, mahallya, mahalle, mohalla, mehalla, or mehalle is an Arabic word variously translated as district, quarter, ward, or neighborhood in many parts of the Arab world, the Balkans, Western Asia, the Indian subcontinent, and nearby nations.

A neighbourhood or neighborhood is a geographically localized community within a larger city, town, suburb or rural area, sometimes consisting of a single street and the buildings lining it. Neighbourhoods are often social communities with considerable face-to-face interaction among members. Researchers have not agreed on an exact definition, but the following may serve as a starting point: "Neighbourhood is generally defined spatially as a specific geographic area and functionally as a set of social networks. Neighbourhoods, then, are the spatial units in which face-to-face social interactions occur—the personal settings and situations where residents seek to realise common values, socialise youth, and maintain effective social control."