The 32-year-old makes the step up to the professional coaching ranks following a six-month spell in charge of FOSROC Super6 side Ayrshire Bulls, having cut his coaching teeth with the Millbrae men following his retirement from playing in December 2021.
He joins Nigel Carolan, Peter Murchie and Al Dickinson on the Glasgow Warriors coaching team for the new season, with a Head Coach to be appointed in due course.
No back has made more appearances for the Warriors than Horne's tally of 182, with only Chris Fusaro, Ryan Wilson and Robert Harley ahead of him in the all-time rankings.
The move sees Horne return to the club with whom he spent the entirety of his professional playing career, the Howe of Fife product having made his debut in Glasgow colours off the bench against Ulster back in March 2009.
Equally adept at inside centre as he was at both fly-half and full-back, his consistently high-quality displays made him a key component of the squad that won the 2015 Guinness PRO12 in unforgettable fashion back in 2015.
Horne’s form in a Glasgow shirt - where his work ethic and dedication to his craft were hallmarks of his playing career - also earned him international recognition, running out on 45 occasions in the dark blue of Scotland, including in both the 2015 and 2019 Rugby World Cup.
Having initially joined the Bulls as an assistant coach for the 2021 FOSROC Super6, Horne was appointed as the club's Head Coach ahead of the 2022 Sprint Series, guiding his team to third place in the overall standings.
"I'm delighted to be back at Scotstoun," Horne told glasgowwarriors.org.
"As soon as I'd stepped away from playing, I had the goal of getting back into the pro game as a coach as soon as I felt ready. When this opportunity came up, it was a no-brainer. I'm so invested in this club and the city that it was an easy decision. I want to help this club back to where it belongs and back challenging at the top of the table.
"We've got a great group of coaches and I'm fortunate to have a great relationship with the guys that are here. I've obviously played with Murch [Pete Murchie] for years, and I worked really closely with Nigel [Carolan] both as a player and then coming in to help out towards the end of the season, too. They're both just great guys to sit and talk about rugby with, and I'm looking forward to learning as much as I can from both of them.
"I want to say a massive thank you to everyone down at Ayr, because it's a fantastic club and they've been the ideal introduction to coaching for me. I couldn't have been luckier. I want to thank all the boys, as well as Billy McHarg - he bought into everything I wanted to do with the squad, and I feel like Ayr is a club for life for me now. I've got a lot of special memories and I want to wish them all the best for what comes next.
"I genuinely believe this Glasgow squad for 2022/23 is one of the most talented groups of players this club has had. There's a great mix of young, Scottish talent, experienced heads and some exciting new arrivals, and there are all the raw ingredients to make something special happen at Scotstoun."
Glasgow Warriors Managing Director Al Kellock said: "To be able to add one of Scotland's most promising young coaches to our team for next season is a real boost for us.
"Pete is someone who understands exactly what it means to be a Warrior and to represent not only this club, but this city. He understands and buys into our club values, and I know that he will do whatever it takes to help to drive this club forward and challenge for silverware.
"His work ethic and willingness to go the extra mile to help his team-mates made him one of the greatest players ever to wear the Glasgow shirt, and I fully believe he has all the traits necessary to be a huge success as Skills Coach."
Scottish Rugby's Performance Director, Jim Mallinder, added: "Pete is someone who is held in high regard across the Scottish rugby community, and his enthusiasm for the game makes it easy to see why.
"I know just how passionate he is about Glasgow Warriors, and I have no doubt that he will approach the role with the same energy and high standards with which he represented both club and country with distinction.
"It's also great to see a hungry young Scottish coach come through the FOSROC Super6 - to see Pete graduate from Ayrshire Bulls into the professional coaching ranks is really pleasing, and hopefully he is an example for many to follow that pathway."