Assuming that you are working in the Schematic Symbol Editor, select the pin and then edit the `name` attribute in the right hand panel.

Sorry: I'm wrong. Select the pin and then change the `Name Display` attribute under `Pin Attributes` in the right hand panel back to `Yes`: ![enter image description here][1] * You cannot actually delete a pin name or number. Instead what happens is that if you try to delete the pin name or number, the Editor just sets the display visibility of the pin name or number to `No`. [1]: /editor/20180204/5a771fb719e9f.png