Johnson, 17, made his Town debut last season against Middlesbrough and was given his first start in the League Cup tie at Exeter last month.
The Young Lions will take on Belgium, Morocco and Korea Republic.
Meanwhile Amari’i Bell, Jacob Brown, Issa Kaboré, Thomas Kaminski, Tom Lockyer and Chiedozie Ogbene have also received call ups.
Bell joins up with Jamaica who have two CONCACAF Nations League fixtures with Grenada and Haiti.
Attacker Brown will be hoping to add to his six caps with a huge UEFA EURO qualifier against Spain and a friendly against France.
It’s friendlies against Equatorial Guinea and Mauritius for Kaboré’s Burkina Faso, while Kaminski and Belgium take on Austria and Sweden in two important UEFA EURO qualifiers.
For Hatters skipper Lockyer, who has appeared 14 times for Wales so far, its a friendly against Gibraltar and a EURO qualifier against Croatia.
Finally, Ogbene will face Greece and Gibraltar while on duty with the Republic of Ireland.
Congratulations and good luck to you all, boys.