Hosted by Zoe Ball, the programme itself is expected to feature previous Doctors and Companions, along with celebrity fans.
Matt Smith & Steven Moffat will also be there.
BBC1 Controller Charlotte Moore has said:
BBC One is the home of big live events and this special live show is the perfect way to reveal the identity of the next Doctor and share it with the nation. The Doctor is a truly iconic role and I’m more than excited about the booking.
Steven Moffat said:
The decision is made and the time has come to reveal who’s taking over the TARDIS. For the last of the Time Lords, the clock is striking twelve.
Ben Stephenson, the Controller of BBC Drama Commissioning:
We can’t wait to unveil the next Doctor with everyone live on BBC1 on Sunday night. Amongst all the speculation and betting, there has been lots of fun and intrigue at work as we’ve been using the codename Houdini as a decoy! It’s the biggest secret in showbiz, even those working with the new Doctor on other projects at the moment have no idea they are in the presence of the 12th incarnation.
It has been confirmed that BBC America, Canadian channel Space and Australia's ABC will be broadcast the special live.
DOCTOR WHO LIVE: THE NEXT DOCTOR SUNDAY 4th AUGUST BBC1 @ 7pm