Open Clash of Clans
Tap the gear icon to open Settings
Tap More Settings
Tap Change Name
Enter your new name
Confirm the change
Use your free name change if available
If you have already used it, spend Gems to change your name again
Open Clash of Clans
Tap the gear icon to open Settings
Tap More Settings
Tap Change Name
Enter your new name
Confirm the change
Use your free name change if available
If you have already used it, spend Gems to change your name again