Wayne Barnes will take charge of Ireland's opening Rugby World Cup fixture against Scotland in September.
The English referee is a familiar face for Irish players, having taken charge of games involving the national side and provinces since 2006.
Ireland will hope that Barnes, a practising barrister, will prove benevolent at the International Stadium in Yokohama on 22 September.
Australia's Angus Gardener will whistle Ireland's second Pool A clash against hosts Japan on 28 September while Jerome Garces of France is the man in the middle for the game against Russia on 3 October.
Another Australian, tournament debutant Nic Berry, will officiate the concluding Pool clash against Samoa on 12 October.
Wales' Nigel Owens will have the honour of refereeing the opening match as hosts Japan take on Russia at Tokyo Stadium on 20 September, kicking-off the 44-day tournament.