Toulouse have beat off competition from a number of clubs to secure the services of Johnathon Ford for 2019.
The 29-year-old has been a large influence on Olympique since his arrival from Sydney Roosters in 2011.
Ford made three NRL appearances before moving to France, where he became a standout player in the Championship.
Several clubs in Super League and the Championship were interested in the Cook Islands international, but he is made up to have signed a new contract with Toulouse.
He said: “I am very grateful to have the opportunity to continue to improve myself as a player and a person in this great club that is the TO XIII.
“I thank everyone who made this possible.”
Toulouse chairman Bernard Sarrazain said: “It is a great satisfaction to keep Johno in our ranks.
“His influence on the group is known to all, by its technical qualities, but also his exemplary attitude. We are pleased to continue working with him we.”