The 27-year-old former Parramatta speedster has inked a contract for the 2026 and 2027 seasons, with options for the following two years which would take him through to 2029.
Wigan's coach Matt Peet is celebrating because he believes the man who can electrify from halfback or fullback has the "X-factor" that all Super League clubs are seeking, along with his old Eels playmaking colleague and great friend French.
Field, who joined Wigan from the Eels in 2021 only to suffer an injury on debut against Leigh at Headingley in a behind-closed-doors game during the pandemic, has since gone on to become one of the most exciting players in the British and European game.
"I'm really pleased to be extending my stay. I'm very grateful to the club and the fans who have shown so much faith in me over the past few seasons," he said.
"I've enjoyed every minute of being here so far and looking forward to hopefully some more great memories here with this group and club."
His searing pace and tries out of nothing saw him shortlisted for the top individual honour, the Man of Steel award, in 2022 and he was a key man for Wigan in their all-conquering last two seasons, with two League Leaders' Shields, two Super League titles, and a second Challenge Cup title.
It was all capped for Field, who's scored 57 tries in 89 games for Wigan, by the World Club Challenge triumph over Penrith.
During the recent trip to Las Vegas, Field's performance against Warrington helped remind Australian watchers of his talent and sparked suggestions he could move back to the NRL.
But Field said in an interview with Sky Sports: "The game is a lot more expansive over here in England and it suits players like myself and Bev. That open style of play makes a difference, it's not completion-orientated. That free-flowing style appeals to us."
Coach Peet enthused: "We're delighted Jai has committed his future to the club. He's a quality player who brings energy, excitement and a real X-factor to our team.
"Just as importantly, he's a great teammate and a big part of our culture. We believe his best years are still ahead of him, and we're proud that they'll be in a Wigan shirt."
