Airdrieonians were confirmed as SPFL Development League West champions on Monday night after Queen of the South's 2-2 draw at Ayr.
The young Diamonds completed their 28-game programme with a 2-0 win over Clyde on April 12 and have finished a point clear of the Dumfries club.
Airdrie U20 manager Stevie Findlay told the club website: "It is an incredible feeling to win the title and bring success to the club for the very first time at this level.
"Words can't express how proud I am of my players and what they have achieved. They are one of the most talented groups I have worked with and it's been my privilege to have been on this journey with them.
"They bought into our shared vision at the start of the season and, through sheer determination, hard work and brilliance they have delivered - an incredible squad with an unyielding spirit and togetherness.
"Full credit has to be given to the players - 10 straight wins and only two defeats in 2015 shows their strength and quality. I hope this is something they will cherish as their careers develop."
Forfar Athletic are in pole position in the Development League East and will clinch the title if they avoid defeat to Raith Rovers on Wednesday evening.
The regional winners will then play off on a home and away basis to decide the overall champion.
