Generally, you don't underline names. Underlining is more common for:
* Titles of books, movies, plays, etc. (though italics are more common now)
* Words you want to emphasize
However, there are a few situations where underlining names might be appropriate:
* Handwritten documents: Underlining can help make names stand out, especially in handwritten notes or lists.
* Specific style guides: Some organizations or publishers might have specific style guides that dictate underlining names in certain instances.
* Emphasis in informal writing: If you're writing something casual and want to emphasize a name, underlining might be acceptable.
The most common way to format names is with:
* Normal capitalization: John Smith, Emily Jones
* Boldface: John Smith, Emily Jones (especially for headings)
Always refer to your specific style guide or the guidelines of your context to determine the best formatting for names.