The Owls have been drawn with Bradford and Burton in Group H of the Papa John’s Trophy.
An invited Premier League Under-21 side will also join Wednesday, the Bantams and the Brewers in the group.
The full draw will take place live on Sky Sports News this Thursday at 11:30am, on fixture release day, after our League One schedule is announced at 9:00am.
All EFL clubs will play two of their three matches at home in the group stages, with the opening ties to take place week commencing 29 August.
The Carabao Cup first round draw is also be made on Thursday, at 2:30pm, and the Owls are confirmed as ball number 29.
Carabao Cup fixtures will take place week commencing 8 August.
The Owls league campaign gets underway on Saturday 30 July.