Always got something to say? Want to submit a review of Papa John's Merthyr Tydfil in Cardiff? Tell us about your experiences by writing a Papa John's Merthyr Tydfil Cardiff review and help build a list of the best fast food shops in Cardiff. Is Papa John's Merthyr Tydfil Cardiff owned by you?, If so, why not claim it now! After claiming your business, you will be able to improve your business listing.