Open the Instagram app or go to https://www.instagram.com/ in a web browser
Log in to your account
Go to your profile
Tap/click the menu (three lines) or your profile settings
Select Settings and privacy
Tap/click Account Center
Select Personal details
Choose Account ownership and control
Select Deactivation or deletion
Choose Deactivate account
Select a reason for deactivating
Re-enter your password
Tap/click Deactivate
Confirm when prompted