Parliamentarians and other commentators routinely assert that UK withdrawal from the ECHR would somehow breach – or undermine – the Belfast (Good Friday) Agreement. This report shows that the Belfast Agreement does not require either the United Kingdom or the Republic of Ireland to remain a party to the ECHR. Each state has the same right under Article 58 of the ECHR to withdraw from the Convention, a right under international law that is not qualified in any way by the Belfast Agreement. UK withdrawal from the ECHR would not constitute a breach of the Belfast Agreement.