Adam Woodyatt, Danny Dyer, Kellie Bright, Shona McGarty and Maddy Hill are among the stars who have filmed a very special tribute.
In the three-minute scene, the iconic Albert Square has been renamed Ramsay Square, and a new arrival turns up - former Neighbours star Jason Donovan!
However, Jason gets a less than neighbourly welcome from the residents...
Watch the full sketch below:
Last month, Neighbours paid tribute to EastEnders by recreating some of the soap's most famous storylines with a special three-minute sketch, titled East Erinsborough.
The cast re-enacted the famous Kat and Zoe Slater "You're not my mother... Yes I am!" scene, as well as Peggy Mitchell shouting her famous words: "Get outta my pub!".
We guess it's only right that EastEnders returned the favour!
Adam, who plays Ian Beale in the BBC One soap, said: "We couldn't let the Neighbours 30th anniversary pass without celebrating, especially after the great tribute they did for us last month. Everyone at EastEnders absolutely loved it.
"So from all of us in Albert Square to everyone in Ramsay Street, have a very happy birthday."
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