Glen Jackson will take charge of the derby between the Stormers and Vodacom Bulls at Newlands on Saturday.
The 43-year-old Kiwi will be assisted by countryman Nick Briant and South African Divan Uys, whose compatriot Marius Jonker will be the TMO.
Meanwhile, the Lions’ match against Crusaders will be refereed by Paul Williams. Mike Fraser and James Munro will be the assistants, while the TMO will be Aaron Paterson.
Nic Berry will officiate the Sharks’ away game against the Waratahs in Sydney, with Damon Murphy and Amy Perrett as his assistants, and George Ayoub as the TMO to complete the all-Australian officiating lineup.