List of acts of the Parliament of Great Britain from 1780

This is a complete list of acts of the Parliament of Great Britain for the year 1780.

For acts passed until 1707, see the list of acts of the Parliament of England and the list of acts of the Parliament of Scotland. See also the list of acts of the Parliament of Ireland.

For acts passed from 1801 onwards, see the list of acts of the Parliament of the United Kingdom. For acts of the devolved parliaments and assemblies in the United Kingdom, see the list of acts of the Scottish Parliament, the list of acts of the Northern Ireland Assembly, and the list of acts and measures of Senedd Cymru; see also the list of acts of the Parliament of Northern Ireland.

The number shown after each act's title is its chapter number. Acts are cited using this number, preceded by the year(s) of the reign during which the relevant parliamentary session was held; thus the Union with Ireland Act 1800 is cited as "39 & 40 Geo. 3 c. 67", meaning the 67th act passed during the session that started in the 39th year of the reign of George III and which finished in the 40th year of that reign. Note that the modern convention is to use Arabic numerals in citations (thus "41 Geo. 3" rather than "41 Geo. III"). Acts of the last session of the Parliament of Great Britain and the first session of the Parliament of the United Kingdom are both cited as "41 Geo. 3".

Acts passed by the Parliament of Great Britain did not have a short title; however, some of these acts have subsequently been given a short title by acts of the Parliament of the United Kingdom (such as the Short Titles Act 1896).

Before the Acts of Parliament (Commencement) Act 1793 came into force on 8 April 1793, acts passed by the Parliament of Great Britain were deemed to have come into effect on the first day of the session in which they were passed. Because of this, the years given in the list below may in fact be the year before a particular act was passed.

20 Geo. 3
The sixth session of the 14th Parliament of Great Britain, which met from 25 November 1779 until 8 July 1780.