| | | | | |
| ACI Worldwide (Pacific) Pty. Ltd. | Australia |
| ACI Payments, Inc. | Delaware |
| Applied Communications Holding GmbH | Germany |
| ACI Worldwide Solutions Private Limited | India |
| Applied Communications GPC Limited | Ireland |
| Applied Communications (Ireland) Limited | Ireland |
| ACI Worldwide (Mexico) S.A. de C.V. | Mexico |
| ACI Worldwide Corp. | Nebraska |
| ACI Worldwide B.V. | Netherlands |
| ACI Worldwide (Asia) Pte. Ltd. | Singapore |
| ACI South Africa (Proprietary) Ltd. | South Africa |
| Applied Communications Inc. U.K. Holding Limited | United Kingdom |
| ACI Worldwide (EMEA) Limited | United Kingdom |