Open Instagram and log in
Go to your profile
Tap the menu icon
Select Settings and privacy
Tap Accounts Center
Tap Personal details
Tap Account ownership and control
Tap Deactivation or deletion
Select the account you want to remove
Choose Delete account
Tap Continue
Follow the prompts to confirm
Enter your password if asked
Confirm the deletion
To temporarily disable the account instead
Go to Accounts Center
Tap Deactivation or deletion
Select the account
Choose Deactivate account
Tap Continue
Follow the prompts to confirm
Enter your password if asked
Confirm the deactivation