Nazir (Hebrew: נזיר‎) is a treatise of the Mishnah and the Tosefta and in both Talmuds, devoted chiefly to a discussion of the laws of the Nazirite laid down in Numbers 6:1-21. In the Tosefta its title is Nezirut ("Nazariteship"). In most of the editions of the Mishnah this treatise is the fourth in the order Nashim, and it is divided into 9 chapters, containing 48 paragraphs in all.