The Owls have snared players with a matter of minutes to go on a number of occasions, keeping supporters on their toes right up until the final moments.
The deadline swoops have offered big hits and, well, some fairly spectacular misses. But how do you rate them? Take a look at just 15 that spring to mind..
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9. Adam Reach
Now into his fifth season at Wednesday, Reach has been pretty much an ever-present for the club since his last-minute £5m signing from Middlesbrough in the summer of 2016. After a difficult 2019/20 campaign the wide man has spoken of his determination to get things right this time out. Photo: Bryn Lennon
10. Rolando Aarons
Arriving on deadline day January 2019 alongside Newcastle clubmate Lazaar, Aarons was a lively winger that struggled for consistency in an Owls shirt, playing nine times and scoring one goal. Has since been on loan at Wycombe and Motherwell. Photo: Stu Forster
11. Dominic Iorfa
After a slow start to life at Wednesday, Iorfa has established himself as a key man at the back having arrived from Wolves on deadline day January 2019. Having won the player of the season award last time out, the England youth international has attracted interest from Watford of late. Photo: Nathan Stirk
12. Josh Onomah
Another late loan signing - will we see any of them at Wednesday this time out? - Onomah is now plying has trade in the Premier League with Fulham but arrived from Tottenham Hotspur on August 31 2018 having starred from Aston Villa the previous season. He played 15 times. Photo: George Wood