Ten-Test winger Naivalu, who has also played for the Melbourne Rebels in Super Rugby, will arrive at the Top 14 club after this year's Rugby World Cup and is planning to stay there through to 2022.
Stade Francais announced the contract on Twitter on Thursday.
The English translation of the tweet reads: "The club is proud to announce the signature of the international winger Sefanaia naivalu for 3 seasons in the capital!"
The news will not come as a major shock, with speculation of Naivalu's post-World Cup departure reported last month.
Naivalu joins Nick Phipps, Curtis Rona, Sam Carter among the capped Wallabies set to head overseas after this year's World Cup in Japan.