Ireland will face the Wallabies next summer in a first ever three-Test series between the two countries.
Brisbane (9 June), Melbourne (16 June) and Sydney (23 June) will host Joe Schmidt’s side during the Super Rugby break and will provide further preparation for both sides in the lead-up to the 2020 World Cup.
With no June Series in Rugby World Cup years and the introduction of a global rugby calendar in 2020, next year's will be the final mid-year series in its current format.
The new series, where both sides will compete for the Lansdowne Cup, was announced by Michael D Higgins as he continued his State Visit of Australia.
The three-Test series will be a historic first between the countries, though Ireland has had four two-Test tours to Australia, in 1979, 1994, 1999 and 2003.
The 1979 tour was the last time the visitors tasted victory on Australian soil, while the last meeting of the sides was a 27-24 victory for Schmidt's side at the Aviva Stadium in November 2016.
IRFU CEO Philip Browne is expecting big support Down Under for the travelling side.
"Games involving Ireland and Australia are always great occasions and this is will be an exciting tour," he said.
"The Irish diaspora are renowned for supporting the Irish team when they visit their new homes so we know there will be a party atmosphere to match the world class rugby."
Australia-Ireland 2018 Series
Saturday June 9, Suncorp Stadium, Brisbane
Saturday June 16, AAMI Park, Melbourne
Saturday June 23, Allianz Stadium, Sydney