The incumbent Ambassador is John Concannon who was appointed on 14 October [1] .

In 1929, the Irish Free State planned to open a diplomatic mission in Ottawa, but these plans were later shelved.

In 1939, Canada and Ireland opened High Commissions in each other's capital cities.

The first and only High Commissioner of Ireland to the Dominion of Canada was John Hearne.

In 1950, Ireland appointed its first Ambassador of Ireland to Canada, Seán Murphy, as the High Commission was also converted into an embassy.