The striker helped the Unicorns to gain promotion for the first time in their history to France elite division after finishing second in Ligue 2.
Tony Khan, Vice Chairman and Director of Football Operations announced the arrival of the player in the club and he is confident that versatile player will hit the ground running.
"Today is a big day for Fulham! We're excited that Aboubakar Kamara has joined our great club,” Khan told Fulham website.
"Aboubakar brings exceptional speed and finishing ability up top and, despite his youth, he's already played a major role in achieving promotion for his prior club. It’s no secret that we’ve had interest in Aboubakar for some time, and I'm confident that it won’t take long for our supporters to see why.
"We’re delighted to welcome Aboubakar to Fulham, and we'll continue to do everything we can to build for the brightest possible future for the Club while also working hard to give our amazing supporters the excellent results that they deserve in the season ahead," he concluded.
Kamara on his part is delighted to be part of the Cottagers and put his quality to bear.
"I am delighted to have completed my transfer to Fulham today. Fulham is a club with a fantastic history and tradition, and I'm looking forward to bringing my qualities to help the team and achieve success."