The Owls' win was even more impressive as they were still a second division team when they beat Sir Alex Ferguson’s top flight giants by a single goal to nil thanks to John Sheridan’s first-half effort on April 21, 1991.
Here's a look back at the celebrations which followed one of the proudest days in the club’s history as thousands of Wednesdayites gathered outside Sheffield Town Hall.
The 1991 League Cup success is still the Owls’ most-recent piece of silverware.
5. We did it!
Nigel Pearson lifts the League Cup after Sheffield Wednesday's 1-0 win Photo: Sheffield Newspapers
6. Cheers boss
Nigel Pearson gives a gentle pat of congratulation to his boss Ron Atkinson Photo: Sheffield Newspapers
7. Hats off!
Ron Atkinson with the cup alongside US star John Harkes. Photo: Sheffield Newspapers
8. That one's for you
Wednesday players celebrate ith their travelling fans Photo: Sheffield Newspapers