I uploaded an ad with the wrong name. Can I rename it without deleting and uploading it again?

Yes. You can rename the ad directly on the Meta Ads Editor upload screen, without deleting anything.

One ad:

1. In the list of published ads (the upload log), click the pencil next to the ad.
2. Enter the new name and confirm.

All ads at once:

1. Check Select all.
2. Click Rename (next to Delete).
3. Since the names are usually similar, the field comes prefilled so you can edit them all at once.

The classic case is leaving the name length option checked and uploading the ad with a completely wrong name. You can just rename it instead of deleting it and uploading again.