The following list of famous fans holds some names that you might not expect and we hope it will be informative to all of you readers out there.
1. The Princes of Buckingham Palace
Well, of course. William will be king someday; what other sport would be appropriate for a future king? Prince Harry meanwhile is now the patron of the RFU!
LONDON, UNITED KINGDOM - JUNE 10: (EMBARGOED FOR PUBLICATION IN UK NEWSPAPERS UNTIL 48 HOURS AFTER CREATE DATE AND TIME) Jonny Wilkinson holds the Webb Ellis Cup as he and Prince Harry attend the launch of the Rugby World Cup Trophy Tour, 100 days before the Rugby World Cup at Twickenham Stadium on June 10, 2015 in London, England. (Photo by Max Mumby/Indigo/Getty Images)
2. Taylor Swift
3. The Hoff
Nobody quite knows what sparked David Hasselhoff's interest in rugby but he's become quite the fan.
4. Samuel L Jackson
Tough but epic game @ChrisRobshaw . Still all to play for against Oz. Hope Wales can get backline together for Fiji! #ENGvWAL@One4theBoys
He loves rugby so much he took it onto the football pitch.
10. Daniel Craig
The man who played 007 was sometimes judged to be too muscular for the part. He can simply blame it on his past as a rugby player with the Birkenhead Park Colts team.
11. The Rock
He may have risen to fame on the professional wrestling circuit and played American football in college in the US but Dwayne 'The Rock' Johnson says that rugby is the toughest sport he's ever played.
Continuing with the rugby theme, Andre the Giant played as a kid in France. Scary thought.
13. JBL
It's a hat-trick. The former World Champion now coaches rugby in Bermuda.
14. Carol Vorderman
Another diehard Wales fan.
15. Rupert Murdoch
16. Javier Bardem
A Spanish actor best known (by some of us) for playing the psychopathic hit man Anton Chigurrh in “No Country for Old Men”.
Famed for his performance as a psychopathic hit man in No Country for Old Men, Bardem would be an intimidating presence on the rugby field. He was a good enough player to represent Spain at national under 21 level as a flanker and prop.
He once said in an interview that "playing rugby in Spain is like being a bullfighter in Japan" which suggests he suffered one concussion too many.
17. Tom Jones
No real surprise that the crooner from the Welsh valleys loves his rugby. He's the first in a long list of Welsh, English and Irish singers and actors to have held a life-long attraction to the game. Others included the late Richard Burton and Richard Harris.
18. US President George W. Bush
Played fullback at Phillips Academy and Yale. And yes, that is him in the below photograph attempting to make up for blowing a tackle by punching his opponent in the face.