And a number of them are hoping he takes the time to check out the board today, including one fan from Australia!
Some of your messages for Rupert
Another fan, called*prongs*, said: "happy birthday Rupert, have a gr8 day", while bertie_bott said: "I hope u have a very happy birthday!!! Good luck with POA!!!"
The mods who make sure your messages get on the site as quick as possible told us that almost every message is about Rupert on the Harry Potter Actors board.
And some Rupert fans are even planning a party on the board later, we hope Rupert's having as much fun celebrating his birthday as his fans are.
Hear story
Rupert's gossip from the Potter DVD launch
Chat on the Potter actors board
Try our quiz on Rupert
