Dag is a masculine Scandinavian given name derived from the Old Norse dagr, meaning "day" (or the name of the god Dagr, a personification of the day), most commonly used in Norway and Sweden. In Sweden, September 16 is Dag's Name Day. Dag is uncommon as a surname.
Meaning of name Dagfinn. Etymology : From the Old Norse name Dagfinnr, which was composed of the elements dagr "day" and Finnr "Sámi, person from Finland". Saint : Origin : Norwegian.
Dagmar is a feminine Scandinavian given name, also used in the Czech Republic, Slovakia, Poland (Dagmara), The Netherlands, Estonia and Germany, derived from the Old Norse name (Dagmær), dagr meaning "day", and mær meaning "daughter," "mother" and "maiden."
Dagny is a Scandinavian feminine given name of Norwegian origin. Alternate forms include Dagna, Dagne and the Latvian form Dagnija. It is derived from the combination of the Old Norse words "dagr" - "day" and "ný" "new."