The 19-year-old is one of three Glasgow Warriors players named in the matchday squad by Head Coach Fergus Pringle, and he is joined in the starting XV by clubmate Ollir McKenna, who lines up at loosehead prop.
Completing the Warriors representation in the starting side is number eight Rory Purvis, who earns his Scotland U20 debut after being part of wider squads in 2025.
Scotland U20 begin their Six Nations campaign in Italy before returning home for their opening fixtures at Hive Stadium later in the competition.
Scotland U20
15 Henry Widdowson (Edinburgh Rugby)
14 Nairn Moncrieff - Vice-captain (Edinburgh Rugby)
13 Campbell Waugh (Glasgow Hawks)
12 Henry Kesterton (Edinburgh Rugby)
11 Rory McHaffie (Edinburgh Rugby)
10 Jake Dalziel (Merchiston Castle School/Melrose RFC)
9 Hamish MacArthur (Edinburgh Rugby)
1 Ollie McKenna (Glasgow Warriors)
2 Joe Roberts - Captain (Glasgow Warriors)
3 Ollie Blyth-Lafferty (Edinburgh Rugby)
4 Christian Lindsay (Edinburgh Rugby)
5 Alfie Blackett (Cardiff Metropolitan University)
6 Sam Byrd (Edinburgh Rugby)
7 Jack Utterson (Edinburgh Rugby)
8 Rory Purvis (Glasgow Warriors)
Substitutes
18 Jamie McAughtrie (Ayr RFC)
17 Will Pearce (Cardiff Metropolitan University/Bristol Bears)
18 Jamie Stewart (Edinburgh Rugby)
19 Fin Ronnie (Watsonians RFC)
20 Harvey Preston (Glasgow Hawks)
21 Oliver Finlayson-Russell (University of St Andrews)
22 Adam McKenzie (Watsonians RFC)
23 Calum Jessop (Heriot's Rugby)