Deyner is a unique boy's name of unknown origin, with no widely accepted etymology or meaning. While some believe it may be Spanish in origin, there's no evidence to support this theory. It could potentially be a variant spelling of Dennis or a portmanteau name combining Dean and нер (ner), but these theories are not widely accepted. Despite its uncertain origins, Deyner has been used as a given name for boys in various cultures throughout history. In the United States, it has been recorded since at least the 1970s but remains relatively rare today.