| A | B |
| After call work | ACW |
| American Express Bank | AEB |
| Amex Global Network Services | AGNS |
| Average Speed to Answer | ASA |
| Business to Business | B2B |
| Business Unit Review | BUR |
| Card Member Services | CMS |
| Cost Benefit Analysis | CBA |
| Credit Servicing Platform | CSP |
| Customer Service Delivery | CSD |
| Customer Services International | CSI |
| Disputes | DISP |
| Emergency Check Cashing | ECC |
| Employee Engagement Action Team | EEAT |
| End of Day | EOD |
| End of Week | EOW |
| Establishment Services | ES |
| Europe Middle East & Africa | EMEA |
| Foreign Exchange Services | FES |
| Global Network Services | GNS |
| Global Revolving Credit Card | GRCC |
| High Value Card Member | HVCM |
| Human Resources | HR |
| Interactive Technologies | IT |
| International Risk Management | IRM |
| Japan Asia Pacific Australia | JAPA |
| Latin America Caribbean & Canada | LACC |
| Leader Readiness Process | LRP |
| Membership Travel Services | MTS |
| New Product Development | NPD |
| On the Job Training | OJT |
| Performance Management Process | PMP |
| Plastic Card Operations | PCO |
| Point of Departure | POD |
| Private Analogue Branch Exchange | PABX |
| Regular Card Product | RCD |
| Service Level Agreement | SLA |
| Travel and Entertainment | T+E |
| Travel Service Office | TSO |
| User Acceptance Testing | UAT |