Addo-Carr has been a standout performer for the Cronulla Sharks Holden Cup side over the past two seasons, scoring a total of 28 tries in 44 games.
The La Perouse and Moore Park junior can play fullback, centre or wing and possesses an abundance of speed.
The 20-year-old expressed his excitement in joining a new Club for 2016.
“I’m really happy to sign on with the Wests Tigers,” Addo-Carr said. “I’m looking forward to ripping in at pre-season training and meeting the rest of the squad.
“It’s a great opportunity for me and I’m looking forward to making the transition from Under 20s into the senior grades.”