Hi DRVasser, there's no built-in setting for this. There are a couple add-ons you could take a look at. I don't use these myself, and you should read the reviews to understand their limitations: * https://addons.mozilla.org/firefox/addon/auto-sort-bookmarks/ * https://addons.mozilla.org/firefox/addon/sort-bookmarks-webext/ Also, in case you want to back up your bookmarks first, I suggest using both available formats: * JSON-format "backup": [[Restore bookmarks from backup or move them to another computer]] * HTML-format "export": [[Export Firefox bookmarks to an HTML file to back up or transfer bookmarks]]