Toulon president Mourad Boudjellal announced on Monday that Mike Ford will replace Diego Dominguez as the new head coach of the first team.
Ford, 50, was appointed as the backs coach of the Top 14 side last month following his exit from the coaching role at Bath after a poor season but now he has been entrusted with the responsibility of handling the three-time European champions.
Toulon are currently placed fourth in the Top 14 table this season after winning four out of their eight games.
In the European Champions Cup, even though they started their campaign with a defeat to Saracens, a 5-15 win over Sale Sharks at AJ Bell Stadium on Friday helped them secure the second position in the Pool 3 table which is currently topped by Mark McCall's men.
Boudjellal, in his statement did not reveal the decision behind the exclusion of Dominguez.
"I have decided to entrust the helm of the first team to Mike Ford," said Toulon's president.
"He has accepted this mission.
"I will not comment on the reasons for my decision."
Ford also has the experience of being the defence coach of the England team and was part of the coaching panel that guided the red rose team to 2007 World Cup final.