The 27-year-old, who played for his country in Tests against Georgia, Fiji and Samoa earlier this summer, will arrive at Welford Road from French club Narbonne.
“David comes in with some good experience in Europe, and we think he can continue to make good progress here,” Leicester head coach Matt O’Connor told the club’s official website.
“He is a big, powerful man, and we look forward to getting him to work in the build-up to the new season.”
The Tigers, meanwhile, have added Fiji international prop Campese Ma’afu to their squad ahead of the Gallagher Premiership campaign.
WELCOME TO THE #TIGERSFAMILY 🐯 ... DAVID FEAO!
— Leicester Tigers (@LeicesterTigers) August 7, 2018
Tonga international prop David Feao has joined Leicester Tigers ahead of the 2018/19 season.
Read the official announcement 👉 https://t.co/WiVBnSq6ua pic.twitter.com/BAVIzJ0hnc
Ma’afu, 33, is an injury dispensation signing, with England international Ellis Genge having undergone knee surgery and not expected back in action until early next year.
O’Connor added: “Campese is a very experienced prop with good knowledge of Premiership and European Rugby.
“He comes into a competitive group of front-rowers at the club.”