Lay may refer to:
Lay person, any person who is not a member of the clergy or of any monastic order or, within such an order, a monastic who is not a priest
Alternate rendering of lai, a 13th- or 14th-century northern European song
Kenneth Lay, late American businessman and former CEO of Enron Corporation
Benjamin Lay (1681-1760), English Quaker and Abolitionist
Lay's, a potato chip brand name and company
Lay, Loire, a French commune in the Loire department