Nigel Owens (Wales) will take charge of the All Blacks semifinal against England on Saturday (5pm JST, 9pm NZT) with Romain Poite and Pascal Gaüzère (both France) as assistant referees and Marius Jonker (South Africa) as TMO.
Jérôme Garcès (France) will referee Wales versus South Africa on Sunday (6pm JST, 10pm NZT) with Wayne Barnes (England) and Ben O’Keeffe (New Zealand) as assistant referees and Ben Skeen (New Zealand) as TMO.
The selection is based on merit after a review of performances by World Rugby’s match officials selection committee.
World Rugby Chairman Sir Bill Beaumont said: "I would like to congratulate Nigel and Jérôme, the assistant referees and TMOs on their selection for the semi-finals.
"These are the best of the best, supported by a superb team, and we now look forward to compelling semi-finals at International Stadium Yokohama over the weekend."