The Owls will face League Two side Mansfield Town in a pre-season friendly in the build up to the 2018/19 campaign.
The fixture will take place at the One Call Stadium on Tuesday 24 July, with kick off at 7.30pm.
Wednesday also played the Stags last pre-season, coming out on top with a 3-2 victory.
The Owls last faced Mansfield competitively in August 2015, winning the League Cup first round clash at Hillsborough 4-1, with goals from Lucas Joao, Jose Semedo, Kieran Lee and Modou Sougou.
David Flitcroft’s Mansfield finished eighth last season, missing out on the play-offs by just three points.
The clash with the Stags is our second confirmed pre-season friendly following the trip to Lincoln City on Friday 13 July (7.30pm)
Ticket details for both games will be announced in due course.