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Wales seek their first win, they currently sit bottom of the table with one point from the opening two rounds
Scotland sit third after a convincing win over Italy in the opening round, but fell to a 17-33 defeat to England last week
Image source, BBC SportKick-off 19:15 GMT
Date: Friday 19 February Venue: Cardiff Arms Park, Cardiff
Watch live on BBC iPlayer, BBC Sport website & app from 19:00 GMT
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U20 Six Nations fixtures and kick-off times
Round 3
Friday, 20 February
19:15 - Wales v Scotland, Cardiff Arms Park, Cardiff
19:45 - England v Ireland, Recreation Ground, Bath
Saturday, 21 February
20:00 - France v Italy, Stadium Lille Metropole, Villeneuve d'Ascq
Round 4
Friday, 6 March
18:15 - Scotland v France, Hive Stadium, Edinburgh
19:15 - Italy v England, Stadio di Monigo, Treviso *
Saturday, 7 March
19:45 - Ireland v Wales, Virgin Media Park, Cork *
Round 5
Sunday, 15 March
13:00 - Wales v Italy, Rodney Parade, Newport *
15:15 - Ireland v Scotland, Virgin Media Park, Cork *
17:45 - France v England, Stade Marcel‑Deflandre, La Rochelle *
Fixtures are subject to late changes and the BBC is not responsible for any that are made.
*Also live on Red Button