One who makes or has made a will; one who dies leaving a will.
A testator is a person who makes a valid will. A will is the document through which a deceased person disposes of his property. A person who dies without having made a will is said to have died intestate.
A testator must be of sound mind when making a will. In part to ensure that a testator is of sound mind, states require that the signing of a will be witnessed by multiple persons. A testator also should be making the will without duress and free of coercion from other persons. If the testator is not acting of her own free will in consenting to the terms of the will, a court may later void all or part of it.