The chief of mission for the United States in Ireland held the title of envoy extraordinary and minister plenipotentiary from 1927 through 1950, and six people served in the role.

Sterling, was a career Foreign Service Officer – other envoys, and all ambassadors to date, have been non-career appointees.

[3] The position was vacant from January 2017 through the end of June 2019, with Reece Smyth serving as the chargé d'affaires of the U.S. Embassy in Ireland.

[4] The prior ambassador, Kevin O'Malley, was nominated by President Barack Obama and served from October 2014 until the presidential inauguration of Donald Trump.

[9] He officially began his term as ambassador upon presentation of his credentials to President of Ireland Michael D. Higgins on July 1, 2019.