无核武地带（英语：Nuclear-Weapons-Free Zone，缩写NWFZ），是指由联合国确认的根据各国自愿订立条约而明令禁止使用、研发和部署核武器的特定区域，联合国大会决议采取一系列监督和控制手段以保障有关条约的施行。无核武地带与不扩散核武器条约比较接近但又有一定的区别。与此类似的还有无核地带，这一概念指的是禁止使用、研发和部署核武器及核电站的特定区域，某些情况下该区域还会禁止安置或处理核废料、禁止使用或研发核动力装置；与无核武地带不同，无核地带所依据的并不是由联合国确认的国际条约。

A nuclear-weapons-free zone (NWFZ) is defined by the United Nations as an agreement which a group of states has freely established by treaty or convention, that bans the use, development, or deployment of nuclear weapons in a given area, that has mechanisms of verification and control to enforce its obligations, and that is recognized as such by the General Assembly of the United Nations. NWFZs have a similar purpose to, but are distinct from, the Nuclear Non-Proliferation Treaty to which most countries including five nuclear weapons states are party. Another term, nuclear-free zone, often means an area which has banned both nuclear power and nuclear weapons, and sometimes nuclear waste and nuclear propulsion, and usually does not mean a UN-acknowledged international treaty.