The Genealogical Office is an office of the Government of Ireland containing genealogical records. It includes the Office of the Chief Herald of Ireland (Irish: Príomh Aralt na hÉireann), the authority in Ireland for heraldry. The Chief Herald authorises the granting of arms to Irish bodies and Irish people, including descendants of emigrants. The office was constituted on 1 April 1943 as successor to the Ulster King of Arms, established during the Tudor period of the Kingdom of Ireland in 1552. The Ulster King of Arms' duties in Northern Ireland were taken over by the Norroy and Ulster King of Arms.
The Genealogical Office was formerly based in Dublin Castle. It was made part of the Department of Education in 1943. The office later relocated to the National Library of Ireland (NLI), and was formally recognised as part of the NLI in 1997. In 2002, it was transferred from Education to the Department of Arts, Sport and Tourism.
The tradition of the Irish abroad seeking grants of arms from the Chief Herald continues to the present. The Office accepts petitions for grants of arms from the following:
An application for a grant of arms should be made to the Chief Herald, on a prescribed form, setting out, in the case of a personal application, basic personal information and accompanied by supporting certificates or other appropriate documents. For a grant of arms to a corporate body or other entity, the application should include information about the legal status (if any) of the organisation, its structure, its activities and business, the length of time during which it has operated and, if relevant, information about membership. Where appropriate, a certified copy of the resolution of the Council, Board, or other controlling body should be submitted.