Can I delete my user name?

[SForrestLO]

No, you can't delete it. You can change it. 

This Turbo Tax FAQ will show you how to update your user name or password. 

Change username

[mesquitebean]

Which username are you referring to--your profile name in this user forum or an Intuit Account User ID?   TurboTax SForrestLO left info on changing an Intuit Account User ID in her answer above.

If you are referring to your forum display name, i.e, the profile name displayed publicly in this forum, it's easy to change.   Changing in this forum, however, does not change the User ID for your Intuit Account.   It only changes what is displayed in this forum.    If that's what you are referring to, here's how:

In the top right corner of this page, click your user icon, and in the dropdown choose  My Settings.   Under the Personal tab it may already open on "Username".  If not click the subtab for "Username."   Then you can change your forum profile name.  Again, this has nothing to do with your Intuit Account User ID that you use to log into your official online TurboTax account.