Around 40,000 of them travelled down to London for the Wembley weekend, turning parts of the capital into a sea of red and white. From Covent Garden and Trafalgar Square on Friday evening to the stadium itself today, there were Mackems everywhere. Here are some of your pictures.
Grace Barry and family soak up the atmosphere on Wembley Way.
Phil Sly sent us this picture of young Sunderland fans on their way to Wembley.
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Billy Stokoe went to Wembley with his uncle, who came home from Dubai for the match.
Charlotte Hoyle travelled down to London on the same train as the Sunderland players and staff.
Mark Petrie, Jack Watson, Alfie Thirlwell, Ronnie Thirlwell and Bobby Petrie took time out from their pre-match preparations to pay their respects.
David Robson and son Charley were among the thousands of Sunderland fans involved in the Trafalgar Takeover on Saturday night.
This is Luke Duncan, already a season ticket holder at the age of 12.
Look who young Fletcher Parkinson bumped into - it's only Sunderland owner Stewart Donald!
Lincoln Parkinson was dressed for the occasion on his first trip to Wembley.
Helen Wells and her sister Sharon Kenny were among those who joined the throng in Trafalgar Square on Saturday night.
Josh White was in his seat at Wembley nice and early so he didn't miss a second of the build-up.
Ashlea Finn couldn't make it to Wembley, but her flag got an airing at the final thanks to her nephew.
Jamie Sheridan made time for an ice cream before he went into Wembley for the match.
Tom and Chris McManus sported some natty headgear for the final.
Three generations of the Forster family made it a trip to Wembley to remember.
This young Sunderland fan got a boost-up so he could get a better view of what was happening before kick-off.
We wonder which team this fan was supporting...
This young fan hitched a ride to save him walking all the way up Wembley Way.
Jackie and Kaillum McDermont, Brian, Geoff and Paul Hutchinson and the 'young adults' in their party.
Young Olly Donkin with friends and family before the game.
Sarah Wheeler and Stephanie Thomas were flying the flag at Wembley.
Young Leland Moore is all sorted for Wembley.
These young Sunderland fans were among the first in the ground.
Taking it all in before the Sunderland section of Wembley Stadium became a cacophony of noise.