This is a list of acts of the Parliament of Ireland for the years from 1781 to 1790.
The number shown by each act's title is its chapter number. Acts are cited using this number, preceded by the years of the reign during which the relevant parliamentary session was held; thus the act concerning assay passed in 1783 is cited as "23 & 24 Geo. 3. c. 23", meaning the 23rd act passed during the session that started in the 23rd year of the reign of George III and which finished in the 24th year of that reign. The modern convention is to use Arabic numerals in citations (thus "40 Geo. 3" rather than "40 Geo. III"). Acts of the reign of Elizabeth I are formally cited without a regnal numeral in the Republic of Ireland.
Acts passed by the Parliament of Ireland 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, acts of the Parliament of Northern Ireland, or acts of the Oireachtas. This means that some acts have different short titles in the Republic of Ireland and Northern Ireland respectively. Official short titles are indicated by the flags of the respective jurisdictions.
A number of the acts included in this list are still in force in Northern Ireland or the Republic of Ireland. Because these two jurisdictions are entirely separate, the version of an act in force in one may differ from the version in force in the other; similarly, an act may have been repealed in one but not in the other.
A number of acts passed by the Parliament of Great Britain also extended to Ireland during this period.
The 4th session of the 3rd parliament of George III, which met from 9 October 1781 to 27 July 1782.
This session was also traditionally cited as 21 & 22 G. 3.
The 1st session of the 4th parliament of George III, which met from 14 October 1783 to 14 May 1784.
This session was also traditionally cited as 23 & 24 G. 3.
The 2nd session of the 4th parliament of George III, which met from 20 January 1785 to 7 September 1785.
This session was also traditionally cited as 25 G. 3.
The 3rd session of the 4th parliament of George III, which met from 19 January 1786 to 8 May 1786.
This session was also traditionally cited as 26 G. 3.
The 4th session of the 4th parliament of George III, which met from 18 January 1787 to 28 May 1787.
This session was also traditionally cited as 27 G. 3.
The 5th session of the 4th parliament of George III, which met from 17 January 1788 to 18 April 1788.
This session was also traditionally cited as 28 G. 3.
The 6th session of the 4th parliament of George III, which met from 5 February 1789 to 25 May 1789.
This session was also traditionally cited as 29 G. 3.
The 7th session of the 4th parliament of George III, which met from 21 January 1790 to 5 April 1790.
This session was also traditionally cited as 30 G. 3.
The 1st session of the 5th parliament of George III, which met from 2 July 1700 to 24 July 1790.
This session was also traditionally cited as 30 Geo. 3. sess. 2, 30 G. 3. Sess. 2 or 30 G. 3. sess. 2.
There were no private acts passed in this session.