Cameron Bancroft will return to England after being overlooked by the Australian selectors to take over from David Warner at the top of the Test order.
Bancroft has signed a contract with Gloucestershire to represent the club in all formats - first-class and limited-overs - for the 2024 season.
The signing comes after he was recently named the men's domestic player of the year at the Australian Cricket Awards after a terrific season for Western Australia, particularly the Sheffield Shield.
Although he will return back to the club, he last played with Gloucestershire in 2017 having played country cricket more recently for Durham in 2021 and Somerset in 2023.
"I'm absolutely delighted to sign with Gloucestershire and to have the chance to return to the club where I started my county career," Bancroft said.
"I love playing county cricket and the opportunity to play all formats with the club is something I'm really excited about.
"With a new coach and a really talented playing group, I'm looking forward to the season ahead."
Bancroft's return will see him play under Mark Alleyne, who was unveiled as their new coach after the incumbent Dale Benkenstein left for Lancashire.
"I'm really excited to have someone of Cameron's ability and experience on board for the season to come," Alleyne added.
"We already have an exciting group of players here so to add to that with a player of international calibre in Cameron, it's fantastic for me as a coach to have such depth in the squad."
In other county news, Surrey has confirmed the arrival of West Indies seamer Kemar Roach for the first seven matches of the Championship season.
"Everyone knows that Surrey is a second home for me, and I love coming to London to play at one of the best grounds in the world," he said.