Snapchat does not currently support the feature to change your name as of January 2015. However, you can delete your existing Snapchat account and create a new account with your desired name.Continue Reading
Visit support.snapchat.com/delete-account, provide your account details, and follow the instructions to delete your account. Be aware that your previous contacts and Snapchat scores are removed when you delete your account.
Open the Snapchat application. Press the gear icon in the top right corner to reveal more options, then select Log Out at the bottom of the screen.
Once you log out, select Sign Up at the Snapchat login interface. Choose your desired Snapchat name, and follow the instructions to create your account.