Unlawful Oaths Act (with its variations) is a stock short title used for legislation in the United Kingdom and the Republic of Ireland relating to unlawful oaths.

Unlawful Oaths Acts may be a generic name either for legislation bearing that short title or for all legislation which relates to the unlawful oaths.

[6][7] The Unlawful Oaths Act 1797[10] (37 Geo.

3. c. 123) was an act passed by the British Parliament.

The act was passed in the aftermath of the Spithead and Nore mutinies and aimed at clandestine political associations and ad hoc agreements such as those which had bound several of the mutineers.