The Chancellor of the Exchequer of Ireland was the head of the Exchequer of Ireland and a member of the Dublin Castle administration under the Lord Lieutenant of Ireland in the Kingdom of Ireland. In early times the title was sometimes given as Chancellor of the Green Wax. The Chancellor was an MP in the Irish House of Commons.
The office was separate from the judicial role of Lord Chief Baron of the Exchequer of Ireland, although in the early centuries the two offices were often held by the same person.
Although the Kingdom of Ireland merged with the Kingdom of Great Britain in 1801 under the Acts of Union 1800 to form the United Kingdom of Great Britain and Ireland, the Exchequer of Ireland did not merge with the Exchequer of Great Britain until 1817. The last separate Chancellor of the Exchequer of Ireland was William Vesey-FitzGerald.