The Ambassador of Ireland to the United States is the head of the Embassy of Ireland, Washington, DC, and the official representative of the Government of Ireland to the Government of the United States.
Geraldine Byrne Nason, appointed Ambassador in August 2022, is incumbent .
The Irish Embassy is located at 1700 Pennsylvania Avenue, NW in The Mills Building near The White House. It was previously located at 2234 Massachusetts Avenue, NW in Sheridan Circle from 1949 until August 2025 and the Ambassador’s Residence is at 2221 30th Street NW.
Ambassadors 2022 - Current: Geraldine Byrne Nason 2017 - 2022: Daniel Mulhall 2013 - 2017: Anne Anderson 2007 - 2013: Michael Collins 2002 - 2007: Noel Fahey 1997 - 2002: Sean O Huiginn 1991 - 1997: Dermot Gallagher 1985 - 1991: Padraic N. MacKernan 1984 - 1985: Tadhg O'Sullivan 1978 - 1984: Sean Donlon 1973 - 1978: John G. Molloy 1970 - 1973: William Warnock 1964 - 1969: William P. Fay 1960 - 1964: Thomas J. Kiernan 1950 - 1960: John Joseph Hearne 1947 - 1950: Sean Nunan 1938 - 1947: Robert Brennan 1929 - 1938: Michael MacWhite 1924 - 1929: Timothy Smiddy
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