The Fijiana XV are in the same group as Wales for August’s tournament in England, along with Scotland and Canada.

Cunningham, 42, resigned as Wales Women’s head coach in November after a turbulent year on and off the pitch.

Fiji are ranked 16th in World Rugby’s rankings and Fiji Rugby says Cunningham will bring “fresh ideas and depth in planning, along with an understanding of northern hemisphere rugby”.

The Welshman expressed excitement for his new role.

“The potential of this group is huge, and I am excited and honoured to be given this opportunity to work with the team and represent Fiji,” said Cunningham.

“It is a very important year in women’s rugby, and I look forward to unlocking the talent within this team.”

Cunningham was appointed Wales Women’s head coach in 2021 and a year later led them to their best finish in the Six Nations for 13 years.

He also took the side to a World Cup quarter-final in 2022, before losing to New Zealand.

However, Wales registered only four wins in 11 Tests in 2024 and Cunningham was involved during difficult contract negotiations with senior players, after which the Welsh Rugby Union admitted serious failings.

Cunningham left by mutual agreement after three years at the helm, having originally been contracted to lead Wales at the World Cup where he will now come face-to-face with his former players.

“Ioan is a professional coach who has been in the women’s game for several years,” said Fiji Rugby women’s high performance manager Alana Thomas.

“He will bring strong leadership and direction to the team and work to unlock the talent we have in this squad in what is a very exciting year for the Vodafone Fijiana XV with the Rugby World Cup ahead of us.”