Rabastan	ra BAS ton
Ravenclaw	RAY vin kla
Regulus	REG ye lus
Remus	REE mus
Riddikulus	ri di KYOO les
Rita Skeeter	REE ta/ SKEE ta
Rodolphus	ra DOL fus
Ron	ron
Rowling	RO ling
Rubeus	roo BAY us

 

 

 

The English to American Dictionary (I found this to be the funniest guide!)
Dictionary of English Slang and Colloquialisms of the UK
American/British Dictionary
British to Canadian Vocabulary Guide (you need Acrobat Reader for this)
Other Links