This is an complete list of Acts of the Parliament of Great Britain for the year 1789. For Acts passed up until 1707 see List of Acts of the Parliament of England and List of Acts of the Parliament of Scotland. See also the List of Acts of the Parliament of Ireland to 1700 and the List of Acts of the Parliament of Ireland, 1701–1800.
For Acts passed from 1801 onwards see 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.
29 Geo. 3
The sixth session of the 16th Parliament of Great Britain, which met from 20 November 1788 until 11 August 1789.
Public acts
| { { |Mutiny Act 1789|public|2|24-03-1789|repealed=y|archived=n|An Act for punishing Mutiny and Desertion, and for the better Payment of the Army and their Quarters.|note4= }}
| { { |Marine Mutiny Act 1789|public|3|24-03-1789|repealed=y|archived=n|An Act for the Regulation of His Majesty's Marine Forces while on Shore.|note4= }}
| { { |Forehoe, Norfolk (Guardians' Borrowing Powers) Act 1789|public|4|24-03-1789|archived=n|An Act for more effectually carrying into Execution the Purposes of certain Acts of the Sixteenth and Twenty-third Years of the Reign of His present Majesty, for the better Relief and Employment of the Poor within the Hundred of Forehoe, in the County of Norfolk.}}
| { { |Manchester Square Improvement Act 1789|public|5|24-03-1789|archived=n|An Act for the Improvement of Manchester Square, within the Parish of Saint Mary-le-bone, in the County of Middlesex.}}
| { { |Land Tax Act 1789|public|6|08-04-1789|repealed=y|archived=n|An Act for granting an Aid to His Majesty by a Land Tax, to be raised in Great Britain, for the Service of the Year One thousand seven hundred and eighty-nine.|note4= }}
| { { |Roxburgh Roads Act 1789|public|7|24-03-1789|archived=n|An Act for enlarging the Term and Powers of so much of an Act made in the Eighth Year of the Reign of His present Majesty, as relates to the repairing and widening several Roads leading through the County of Roxburgh; and for better regulating the Statute Labour within the said County.}}
| { { |Essex Shire House Act 1789|public|8|08-04-1789|archived=n|An Act for building a new Shire House, for the County of Essex.}}
| { { |Duties on Shops Act 1789|public|9|19-05-1789|repealed=y|archived=n|An Act to repeal Two Acts made in the Twenty-fifth and Twenty-sixth Years of the Reign of His present Majesty, for granting to His Majesty certain Duties on Shops within Great Britain.|note4= }}
| { { |Malt Duties Act 1789|public|10|08-04-1789|repealed=y|archived=n|An Act for continuing and granting to His Majesty certain Duties upon Malt, Mum, Cyder, and Perry, for the Service of the Year One thousand seven hundred and eighty-nine.|note4= }}