And time is of the essence when it comes to bringing a new man in.
A handful of different names have been linked with the job in one way or another - some big names, some a little more nuanced. There are names from home and abroad, some with Championship experience and some less so. As the picture becomes clearer, it’ll be fascinating to see where the Owls go with it.
We asked you, the Sheffield Wednesday fan base, who you fancied in as the next boss and you replied in your droves.
Here are a few of the names you told us you’d like to see replace Moore.
9. Steve Bruce
We did say realistic, right? This one seems to have fallen through the net! Look, his promotion record is remarkable. But there’s too much water under the bridge on this one. Far too much water. | Getty
10. Paul Warne
A big personality popular with many Wednesday fans despite a long, long-held relationship with Rotherham United, Warne is regarded as a bright young thing in EFL terms. Failed to turn Derby around quickly enough to achieve a play-off place but will fancy a good go this coming season. | Getty Images
11. Ryan Lowe
Has made no secret of the fact he would one day fancy the job having enjoyed a solitary season as a Wednesday player and helping them nip their way to promotion. He’s in situ at Preston North End, however, and might fell they’re a better bet for now at least. Photo: Naomi Baker
12. Gary O'Neil
Left Bournemouth in confusing circumstances last week. Achieved Premier League safety against all odds, doing so fairly comfortably, last season and is out of work. Plays some good stuff at times. Photo: STEVE BARDENS/AFP via Getty Images