Diners Club CanadaProfessional CardsCorporate ProductsClub Rewards and BenefitsCustomer Service

If you forgot your user ID, Corporate and Professional Cardmembers can contact Customer Service at 1 8 0 0 3 6 3 3 3 3 3 (24 hours a day, 7 days a week) or re-register to obtain a new user ID.

Corporate Program Administrators

If you forgot your user ID to access Secure e-Account Manager, please contact Client Services at 1 8 0 0 6 6 3 1 5 2 7 (M – F, 8 a.m. – 8 p.m. ET)