Open Instagram and log in to the account you want to remove
Go to your profile
Tap the menu icon
Open Settings and privacy
Tap Accounts Center
Tap Personal details
Tap Account ownership and control
Tap Deactivation or deletion
Select the Instagram account
Choose Delete account
Tap Continue
Follow the on-screen prompts
Confirm the deletion
If you want to remove the account from the app without deleting it, log out of the account
On the login screen, tap Remove or Manage accounts
Select the account
Tap Remove from device