Pete Horne will take charge of Scotland A for their match against Chile on Saturday, November 23.
The Scotland assistant coach will move into the head coach role for the match in what is the final week of The Famous Grouse Nations Series.
As a player, Horne made 45 appearances for the national team before hanging up his boots in 2021.
He started his coaching career with Ayrshire Bulls in the Super Series before becoming assistant coach at Glasgow Warriors and Scotland.
He will be joined by Stevie Lawrie as forwards coach along with Pete Murchie as defence coach.
Last time Scotland played Chile, the Scots ran out comfortable 45-5 winners in 2022.
On being appointed head coach of the A team, Horne said: “It’s a real honour coaching your country at any level and I am excited by the opportunity. I jumped at the chance when Gregor asked if I would lead Scotland A. The national team played Chile in the summer and they posed a real threat. It’ll be brilliant to see players grasp their opportunity against a national team and play in front of a good crowd at the Hive.
“There are so many good young players coming through in Scotland but the opportunities to test themselves at that next level can often be limited. The A matches act as a platform for these guys to impress and make the step up to the first team.”