White, who masterminded South Africa's 2007 World Cup triumph, had until recently been coaching Toyota Verblitz in Japan but is now back in his homeland.
The 56-year-old fills the role Alan Zondagh vacated last month and starts work immediately.
White joins a Super Rugby franchise that had won just one of six matches before the season was halted due to the coronavirus pandemic.
#BullsFamily welcomes Jake White.