ESPN, which jointly holds the FA Cup rights with ITV, has said that it will show the match between Chelsea and Liverpool on May 5 in standard and high definition.
From 4.45pm, the coverage will be shown without commercial interruption, but with sponsorship from Wonga, said the Disney-owned broadcaster.
ESPN will also capture the prestigious final in 3D, which will be aired live on Sky's 3D channel for the second year in a row.
ESPN's FA Cup final celebration will begin at 8am on the day, with Breakfast at Wembley, followed by a specially-commissioned FA Cup documentary, Kings For a Day - Football's Giant Killers.
Other planned programmes include a Pardon The Interruption UK special with Mark Chapman and Steve Bunce, along with a Talk of the Terrace special hosted by Kelly Cates with a live performance from The Enemy.
From 2pm, lead presenter Rebecca Lowe will be joined by Kevin Keegan, John Barnes and Craig Burley plus special guests for all build-up to the 5.15pm kick off. The coverage of the FA Cup Final will also be shown on ESPN HD.
"The FA Cup Final has a special place in the hearts of football fans everywhere, and at ESPN we are thrilled to be continuing the tradition of broadcasting all day around the FA Cup Final from Wembley Stadium," said Ross Hair, the managing director of ESPN (Europe, Middle East and Africa).
"This year's FA Cup has produced some remarkable stories and matches on ESPN. Our coverage of the Final will highlight our ongoing commitment to give fans an ever increasing insight into the matches we broadcast and to the stories around them."
More than 250,000 Sky World subscribers with a Sky+ HD box and 3D-enabled TV will be able to watch the 2012 FA Cup Final in 3D. It will also be shown in more than 1,500 Sky 3D pubs under a syndication deal between the two broadcasters.
Sky 3D director John Cassy said: "For the second year in a row we are delighted to work with ESPN to bring more than a quarter of a million Sky homes the FA Cup in amazing 3D.
"Partners like ESPN are really helping us expand the content available to customers and therefore extend our 3D leadership even further. It's a big year of sport on Sky 3D with live football, golf, tennis, rugby and, of course, the Olympics. There's never been a better time to enjoy the thrill of live sport as never before."
> ITV to continue showing FA Cup, England home games