Tuqiri will quit his contract with Perthshire Blades and return home in late March.
Lote Tuqiri has been lured back to the NRL, signing a three-year deal with Wests Tigers.
The dual international put pen to paper after weighing up more lucrative offers from rugby union clubs in Europe.
Tuqiri is currently playing for Scottish rugby union side Perthshire Blades and will return to Australia to begin his contract with Wests.
Tigers chief executive Stephen Humphreys flew to the UK to finalise the negotiations and says Tuqiri is the biggest signing in the club's 11-year history.
"We made it clear early on that should Lote be interested in returning to rugby league, then Wests Tigers were keen to accommodate him,'' Humphreys said.
The former Brisbane Bronco left the NRL in 2002 but said he was looking forward to his return.
"There is no question the NRL is one of the toughest sporting competitions in the world and I am confident Wests Tigers will enjoy great success in the coming years," Tuqiri said in a statement.
"The opportunity to play under the most experienced coach in the game in Tim Sheens was a major factor in my decision. Wests Tigers is a club with a great culture and a terrific roster of players. I am thrilled to be joining them."
Sheens said the 30-year-old Tuqiri will bring experience and an added X-factor to his squad which already boasts stars such as Benji Marshall and Robbie Farah.
"He has achieved more than most footballers and to have someone of his calibre in our team is a great addition to an already impressive squad of talented players," Sheens said.
"I know one of the main driving reasons behind Lote's decision is that he is very keen to break back into representative footy, something other players coming back from rugby union have been unable to do of late."
Tuqiri played 99 games for the Broncos and won a premiership with the side in 2000.
He also won six caps for Queensland and five for Australia before switching to rugby union to play for the New South Wales Waratahs.
Tuqiri played 76 games for the Waratahs and made his international debut for the Wallabies in 2003.
He also Topped the WFR XII standings as the Highest FORM Player
The outside back went on to win 67 caps for the Wallabies before his contract was terminated by the Australian Rugby Union in July last year for apparent off-field incidents.
"I enjoyed my time in rugby union immensely and have been very fortunate to have made many great friends through my time in the code," Tuqiri said.
Tuqiri follows fellow dual internationals Wendell Sailor and Mat Rogers to return to the NRL after stings in union.
Wests first NRL match of the season is against Manly but Tuqiri is not likely to feature until round three or four.
Perthshire Blades will announce his replacement in the WFR XIII Draft
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