3. c. 21 (I)) was an Act of the Parliament of Ireland, implicitly repealing some of the Irish Penal Laws and relieving Roman Catholics of certain political, educational, and economic disabilities.

The Irish Act included certain local provisions such as allowing Catholics to take degrees at Trinity College Dublin.

However, it did not remove the terms of the parliamentary oath which prohibited Catholics from sitting in the Parliament of Ireland; section 9 of the 1793 act gave a long list of offices in the Dublin Castle administration for which the existing oaths, anathema to Catholics, remained obligatory.

Section 12 of the 1829 act had a much shorter list of excluded offices, in particular allowing Catholic MPs.

[2] Particular sections were later explicitly repealed as follows:[2] The whole act was repealed in United Kingdom law (as regards Northern Ireland) by the Statute Law Revision Act 1953 (passed by Westminster rather than Stormont).