A tehsil or tahsil/tahasil (Punjabi: ਤਹਿਸੀਲ, Urdu: تحصیل‏‎, Hindi: तहसील), also known as taluk (or taluq/taluka) and mandal, is an administrative division of some countries of South Asia.

Generally, a tehsil consists of a city or town that serves as its headquarters, possibly additional towns, and a number of villages. As an entity of local government, it exercises certain fiscal and administrative power over the villages and municipalities within its jurisdiction. It is the ultimate executive agency for land records and related administrative matters. Its chief official is called the tehsildar or less officially the talukdar or taluka muktiarkar.

Tehsil and taluka and their variants are used as English words without further translation. Since these terms are unfamiliar to English speakers outside of the subcontinent, the word county has sometimes been provided as a gloss, on the basis that a tehsil, like a county, is an administrative unit hierarchically above the local city, town, or village, but subordinate to a larger state or province. However, India and Pakistan have two (or more, at least in parts of India) intermediate levels of hierarchy — the district and the tehsil, both of which are sometimes glossed as county. In neither case is the analogy very precise in specific details.