The popular YouTube video website will soon be available directly through Apple's TV set-top box.
Apple TV offers a bridge between a computer and a television
Apple says that starting from mid-June, Apple TV users will be able to automatically stream YouTube content onto their televisions.
At present, Apple TV users can only access content stored in Apple's iTunes music and video library system.
The move may raise copyright issues for Apple, as YouTube faces a number of infringement lawsuits.
YouTube is currently being sued for $1bn (£506m) by MTV-owner Viacom, after users uploaded thousands of Viacom-owned videos to the service without its permission.
However, following Apple's announcement of the tie-up with YouTube, Viacom struck a conciliatory tone.
"We're always vigilant about protecting our copyrights," said a Viacom spokeswoman.
"But we would welcome the opportunity to license our content to Apple as we do with all distributors."
Apple added that YouTube members would also be able to log onto their YouTube accounts on Apple TV.
Apple also announced it would be selling a version of Apple TV with much more storage capacity - 160GB, four times that of the current $299 model - for $399.