Yes, however, each character will need to be on either separate service accounts or Square Enix Accounts with separate subscriptions in order to play simultaneously. Each service account or Square Enix Account will need its own version of FINAL FANTASY XIV registered.

For PlayStation 4, a separate console and Square Enix ID will be required as well.

While you are able to run multiple instances of FINAL FANTASY XIV on a PC, please note that the use of third party programs to automatically input controls are against the Terms of Service for FINAL FANTASY XIV.