Olivier’s signature follows on extensions signed by Springbok flanker Deon Stegmann, winger Gerhard van den Heever and midfielder Stefan Watermeyer earlier in the month.
The midfielder indicated that he considered offers from abroad, but confirmed his loyalty to the union he started representing as a school boy.
“We will be going through bit of a rebuilding phase next year, so I am keen to stick around and help to ease the transition. I am enjoying my rugby at the Bulls and wants to be part of a successful team as well,” Olivier said.
Coach Frans Ludeke welcomed the news.
“He is a world class player and a Bulls player to the core. It is great to plan for the future knowing a proven champion like Wynand will be around.”