Marc Sneyd delivered another match-winning performance to inspire Hull to back-to-back Challenge Cup triumphs.
Sneyd's kicking game proved the difference as Lee Radford's men became the first Hull side to retain the trophy with an 18-14 victory.
John Bateman gave Wigan a fourth-minute lead only for Fetuli Talanoa and Mahe Fonua to touch down from Sneyd kicks to swing a gripping first half Hull's way.
Oliver Gildart crossed to leave the Warriors 12-10 down at the break but it was all Hull after the restart, with Fonua squeezing over in the corner to give the Black and Whites breathing space.
Joe Burgess scored to set up a grandstand finish and then had another ruled out in the final minute as Hull hung on to edge a thrilling final