Halal (; Arabic: حلال, ḥalāl) is an Arabic word that translates to 'permissible' in English. In the Quran, the term halal is contrasted with the term haram ('forbidden'). This binary opposition was elaborated into a more complex classification known as "the five decisions": mandatory, recommended, neutral, reprehensible and forbidden. Islamic jurists disagree on whether the term halal covers the first two or the first four of these categories. In recent times, Islamic movements seeking to mobilize the masses and authors writing for a popular audience have emphasized the simpler distinction of halal and haram.

The term halal is particularly associated with Islamic dietary laws and especially meat processed and prepared in accordance with those requirements.