The Halifax Gibbet was an early guillotine used in the town of Halifax, West Yorkshire, England. Estimated to have been installed during the 16th century, it was used as an alternative to beheading by axe or sword. Halifax was once part of the Manor of Wakefield, where ancient custom and law gave the Lord of the Manor the authority to execute summarily by decapitation any thief caught with stolen goods to the value of 131⁄2d or more, or who confessed to having stolen goods of at least that value. Decapitation was a fairly common method of execution in England, but Halifax was unusual in two respects: it employed a guillotine-like machine that appears to have been unique in the country, and it continued to decapitate petty criminals until the mid-17th century.

A guillotine is an apparatus designed for effectively carrying out executions by beheading. The device consists of a tall, upright frame with a weighted and angled blade suspended at the top. The condemned person is secured with a pillory at the bottom of the frame, holding the position of the neck directly below the blade. The blade is then released, swiftly and forcefully decapitating the victim with a single, clean pass; the head falls into a basket or other receptacle below.