Where was the last name Lail originated from?

The last name Lail is primarily of Arabic origin. It is a variant spelling of the name Lail (pronounced "layl"), which means "night" in Arabic.

It is also possible that the name Lail may have originated from other cultures, such as England or Scotland, where it could be a variation of the name Lyle.

However, the Arabic origin is the most common and widely accepted etymology for the surname Lail.