Ireland's Alain Rolland will take charge of the all-French Heineken Cup final between Clermont and Toulon on May 18.
Bilingual Rolland, whose father is French, will be making a record 72nd appearance in Europe's leading cup competition at Dublin's Lansdowne Road.
Rolland, who refereed the 2007 World Cup, final will be assisted by touch judges Wayne Barnes of England and Ireland's George Clancy.
He was also in charge of Toulon's 24-12 semi-final victory over Saracens last month and officiated in the 2004 final when Wasps defeated Toulouse 27-20.
The Challenge Cup final between Leinster and Stade Francais a day earlier at the Royal Dublin Society stadium will be officiated by Welshman Nigel Owens, with his countrymen Leighton Hodges and Ian Davies running the lines.